{"id":4647,"date":"2016-05-17T11:49:00","date_gmt":"2016-05-17T06:19:00","guid":{"rendered":"http:\/\/mycbseguide.com\/blog\/ncert-solutions-class-8-maths-exercise-1-1\/"},"modified":"2018-06-25T17:16:57","modified_gmt":"2018-06-25T11:46:57","slug":"ncert-solutions-for-class-8-maths-exercise-1-1","status":"publish","type":"post","link":"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-8-maths-exercise-1-1\/","title":{"rendered":"NCERT Solutions for Class 8 Maths Exercise 1.1"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_76 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-8-maths-exercise-1-1\/#NCERT_Solutions_for_Class_8_Maths_Rational_Numbers\" >NCERT Solutions for Class 8 Maths Rational Numbers<\/a><ul class='ez-toc-list-level-6' ><li class='ez-toc-heading-level-6'><ul class='ez-toc-list-level-6' ><li class='ez-toc-heading-level-6'><ul class='ez-toc-list-level-6' ><li class='ez-toc-heading-level-6'><ul class='ez-toc-list-level-6' ><li class='ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-8-maths-exercise-1-1\/#Class_%E2%80%93VIII_Mathematics_Ex_11\" >Class \u2013VIII Mathematics (Ex. 1.1)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-8-maths-exercise-1-1\/#Questions\" >Questions<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-8-maths-exercise-1-1\/#1_Using_appropriate_properties_find\" >1. Using appropriate properties find:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-8-maths-exercise-1-1\/#2_Write_the_additive_inverse_of_each_of_the_following\" >2. Write the additive inverse of each of the following:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-8-maths-exercise-1-1\/#3_Verify_that_for\" >3. Verify that \u00a0for:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-8-maths-exercise-1-1\/#4_Find_the_multiplicative_inverse_of_the_following\" >4. Find the multiplicative inverse of the following:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-8-maths-exercise-1-1\/#5_Name_the_property_under_multiplication_used_in_each_of_the_following\" >5. Name the property under multiplication used in each of the following:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-8-maths-exercise-1-1\/#6_Multiply_by_the_reciprocal_of\" >6. Multiply \u00a0by the reciprocal of<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-8-maths-exercise-1-1\/#7_Tell_what_property_allows_you_to_compute\" >7. Tell what property allows you to compute<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-8-maths-exercise-1-1\/#8_Is_the_multiplicative_inverse_of\" >8. Is \u00a0the multiplicative inverse of<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-8-maths-exercise-1-1\/#9_Is_03_the_multiplicative_inverse_of_Why_or_why_not\" >9. Is 0.3 the multiplicative inverse of \u00a0Why or why not?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-8-maths-exercise-1-1\/#10Write\" >10.Write:<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-5'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-8-maths-exercise-1-1\/#11_Fill_in_the_blanks\" >11. Fill in the blanks:<\/a><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-8-maths-exercise-1-1\/#NCERT_Solutions_for_Class_8_Maths_Exercise_11\" >NCERT Solutions for Class 8 Maths Exercise 1.1<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-8-maths-exercise-1-1\/#CBSE_app_for_Class_8\" >CBSE app for Class 8<\/a><\/li><\/ul><\/nav><\/div>\n<p>NCERT Solutions for Class 8 Maths Exercise 1.1 Class 8 Maths book solutions are available in PDF format for free download. These ncert book chapter wise questions and answers are very helpful for CBSE exam. CBSE recommends NCERT books and most of the questions in CBSE exam are asked from NCERT text books. Class 8 Maths chapter wise NCERT solution for Maths Book all the chapters can be downloaded from our website and myCBSEguide mobile app for free.<\/p>\n<p style=\"text-align: center;\"><strong>NCERT solutions for Class 8 Maths\u00a0Rational Numbers <a class=\"button\" href=\"https:\/\/mycbseguide.com\/downloads\/cbse-class-08-mathematics-rational-numbers\/1450\/ncert-solutions\/5\/\">Download as PDF<\/a><\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/media-mycbseguide.s3.ap-south-1.amazonaws.com\/images\/blog\/08_Maths_Book.jpg\" alt=\"NCERT Solutions for Class 8 Maths Exercise 1.1\" width=\"170\" height=\"213\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"NCERT_Solutions_for_Class_8_Maths_Rational_Numbers\"><\/span>NCERT Solutions for Class 8 Maths Rational Numbers<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h6 style=\"text-align: center;\"><span class=\"ez-toc-section\" id=\"Class_%E2%80%93VIII_Mathematics_Ex_11\"><\/span><strong>Class \u2013VIII Mathematics (Ex. 1.1)<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<h6><span class=\"ez-toc-section\" id=\"Questions\"><\/span><strong>Questions<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<h6><span class=\"ez-toc-section\" id=\"1_Using_appropriate_properties_find\"><\/span>1. Using appropriate properties find:<span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p>(i) <img decoding=\"async\" style=\"height: 41px; width: 124px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image001.png\" \/><\/p>\n<p>Ans. (i)<img decoding=\"async\" style=\"height: 41px; width: 120px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image002.png\" \/><\/p>\n<p>= <img decoding=\"async\" style=\"height: 41px; width: 120px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image003.png\" \/><\/p>\n[Using associative property]\n<p>= <img decoding=\"async\" style=\"height: 45px; width: 100px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image004.png\" \/><\/p>\n[Using distributive property]\n<p>= <img decoding=\"async\" style=\"height: 45px; width: 99px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image005.png\" \/>\u00a0= <img decoding=\"async\" style=\"height: 41px; width: 71px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image006.png\" \/><\/p>\n<p>= <img decoding=\"async\" style=\"height: 41px; width: 51px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image007.png\" \/>\u00a0= <img decoding=\"async\" style=\"height: 41px; width: 44px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image008.png\" \/>\u00a0= <img decoding=\"async\" style=\"height: 41px; width: 16px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image009.png\" \/>\u00a0= 2<\/p>\n<p>(ii) <img decoding=\"async\" style=\"height: 45px; width: 164px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image010.png\" \/><\/p>\n<p>Ans. (ii)<img decoding=\"async\" style=\"height: 45px; width: 164px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image010.png\" \/><\/p>\n<p>= <img decoding=\"async\" style=\"height: 45px; width: 164px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image011.png\" \/><\/p>\n[Using associative property]\n<p>= <img decoding=\"async\" style=\"height: 45px; width: 117px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image012.png\" \/><\/p>\n[Using distributive property]\n<p>= <img decoding=\"async\" style=\"height: 45px; width: 107px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image013.png\" \/>\u00a0= <img decoding=\"async\" style=\"height: 41px; width: 72px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image014.png\" \/><\/p>\n<p>= <img decoding=\"async\" style=\"height: 41px; width: 48px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image015.png\" \/>\u00a0= <img decoding=\"async\" style=\"height: 41px; width: 47px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image016.png\" \/>\u00a0= <img decoding=\"async\" style=\"height: 41px; width: 31px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image017.png\" \/><\/p>\n<h6><span class=\"ez-toc-section\" id=\"2_Write_the_additive_inverse_of_each_of_the_following\"><\/span>2. Write the additive inverse of each of the following:<span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p>(i) <img decoding=\"async\" style=\"height: 41px; width: 16px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image018.png\" \/><\/p>\n<p>(ii)<img decoding=\"async\" style=\"height: 41px; width: 24px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image019.png\" \/><\/p>\n<p>(iii)<img decoding=\"async\" style=\"height: 41px; width: 24px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image020.png\" \/><\/p>\n<p>(iv)<img decoding=\"async\" style=\"height: 41px; width: 24px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image021.png\" \/><\/p>\n<p>(v)<img decoding=\"async\" style=\"height: 41px; width: 24px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image022.png\" \/><\/p>\n<p><strong>Ans 2.<\/strong> We know that additive inverse of a rational number <img decoding=\"async\" style=\"height: 41px; width: 16px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image023.png\" \/>\u00a0is <img decoding=\"async\" style=\"height: 45px; width: 47px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image024.png\" \/>\u00a0such that <img decoding=\"async\" style=\"height: 45px; width: 93px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image025.png\" \/><\/p>\n<p>(i) Additive inverse of <img decoding=\"async\" style=\"height: 41px; width: 16px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image018.png\" \/>\u00a0is <img decoding=\"async\" style=\"height: 41px; width: 28px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image026.png\" \/><\/p>\n<p>(ii) Additive inverse of <img decoding=\"async\" style=\"height: 41px; width: 24px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image019.png\" \/>\u00a0is <img decoding=\"async\" style=\"height: 41px; width: 19px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image027.png\" \/><\/p>\n<p>(iii) Additive inverse of <img decoding=\"async\" style=\"height: 41px; width: 24px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image020.png\" \/>\u00a0is <img decoding=\"async\" style=\"height: 41px; width: 28px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image028.png\" \/><\/p>\n<p>(iv) Additive inverse of <img decoding=\"async\" style=\"height: 41px; width: 24px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image021.png\" \/>\u00a0is <img decoding=\"async\" style=\"height: 41px; width: 20px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image029.png\" \/><\/p>\n<p>(v) Additive inverse of <img decoding=\"async\" style=\"height: 41px; width: 24px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image022.png\" \/>\u00a0is <img decoding=\"async\" style=\"height: 41px; width: 25px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image030.png\" \/><\/p>\n<p style=\"text-align: center;\">NCERT Solutions for Class 8 Maths Exercise 1.1<\/p>\n<h6><span class=\"ez-toc-section\" id=\"3_Verify_that_for\"><\/span>3. Verify that <img decoding=\"async\" style=\"height: 27px; width: 69px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image031.png\" \/>\u00a0for:<span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p>(i)<img decoding=\"async\" style=\"height: 41px; width: 45px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image032.png\" \/><\/p>\n<p>(ii)<img decoding=\"async\" style=\"height: 41px; width: 57px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image033.png\" \/><\/p>\n<p>Ans 3.(i) Putting <img decoding=\"async\" style=\"height: 41px; width: 45px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image032.png\" \/>\u00a0in <img decoding=\"async\" style=\"height: 27px; width: 73px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image034.png\" \/><\/p>\n<p><img decoding=\"async\" style=\"height: 45px; width: 92px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image035.png\" \/>\u00a0<img decoding=\"async\" style=\"height: 16px; width: 20px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image036.png\" \/>\u00a0<img decoding=\"async\" style=\"height: 41px; width: 53px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image037.png\" \/><\/p>\n<p><img decoding=\"async\" style=\"height: 16px; width: 20px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image036.png\" \/>L.H.S. = R.H.S.<\/p>\n<p>Hence, verified.<\/p>\n<p>(ii)Putting <img decoding=\"async\" style=\"height: 41px; width: 56px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image038.png\" \/>\u00a0in <img decoding=\"async\" style=\"height: 27px; width: 73px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image034.png\" \/><\/p>\n<p><img decoding=\"async\" style=\"height: 48px; width: 129px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image039.png\" \/>\u00a0<img decoding=\"async\" style=\"height: 16px; width: 20px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image036.png\" \/><img decoding=\"async\" style=\"height: 41px; width: 75px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image040.png\" \/><\/p>\n<p><img decoding=\"async\" style=\"height: 16px; width: 20px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image036.png\" \/>L.H.S. = R.H.S.<\/p>\n<p>Hence, verified.<\/p>\n<p style=\"text-align: center;\">NCERT Solutions for Class 8 Maths Exercise 1.1<\/p>\n<h6><span class=\"ez-toc-section\" id=\"4_Find_the_multiplicative_inverse_of_the_following\"><\/span>4. Find the multiplicative inverse of the following:<span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p>(i)<img decoding=\"async\" style=\"height: 19px; width: 29px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image041.png\" \/><\/p>\n<p>(ii)<img decoding=\"async\" style=\"height: 41px; width: 32px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image042.png\" \/><\/p>\n<p>(iii)<img decoding=\"async\" style=\"height: 41px; width: 15px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image043.png\" \/><\/p>\n<p>(iv)<img decoding=\"async\" style=\"height: 41px; width: 55px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image044.png\" \/><\/p>\n<p>(v)<img decoding=\"async\" style=\"height: 41px; width: 52px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image045.png\" \/><\/p>\n<p>(vi)<img decoding=\"async\" style=\"height: 17px; width: 20px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image046.png\" \/><\/p>\n<p>Ans 4. We know that multiplicative inverse of a rational number <img decoding=\"async\" style=\"height: 15px; width: 13px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image047.png\" \/>\u00a0is <img decoding=\"async\" style=\"height: 45px; width: 37px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image048.png\" \/>\u00a0such that <img decoding=\"async\" style=\"height: 41px; width: 63px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image049.png\" \/><\/p>\n<p>(i) Multiplicative inverse of <img decoding=\"async\" style=\"height: 19px; width: 29px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image041.png\" \/>\u00a0is <img decoding=\"async\" style=\"height: 41px; width: 27px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image050.png\" \/><\/p>\n<p>(ii) Multiplicative inverse of <img decoding=\"async\" style=\"height: 41px; width: 32px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image042.png\" \/>\u00a0is <img decoding=\"async\" style=\"height: 41px; width: 36px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image051.png\" \/><\/p>\n<p>(iii) Multiplicative inverse of <img decoding=\"async\" style=\"height: 41px; width: 15px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image043.png\" \/>\u00a0is <img decoding=\"async\" style=\"height: 19px; width: 16px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image052.png\" \/><\/p>\n<p>(iv) Multiplicative inverse of <img decoding=\"async\" style=\"height: 41px; width: 89px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image053.png\" \/>\u00a0is <img decoding=\"async\" style=\"height: 41px; width: 27px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image054.png\" \/><\/p>\n<p>(v) Multiplicative inverse of <img decoding=\"async\" style=\"height: 41px; width: 79px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image055.png\" \/>\u00a0is <img decoding=\"async\" style=\"height: 41px; width: 20px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image056.png\" \/><\/p>\n<p>(vi) Multiplicative inverse of <img decoding=\"async\" style=\"height: 17px; width: 20px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image046.png\" \/>\u00a0is <img decoding=\"async\" style=\"height: 41px; width: 27px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image057.png\" \/><\/p>\n<p style=\"text-align: center;\">NCERT Solutions for Class 8 Maths Exercise 1.1<\/p>\n<h6><span class=\"ez-toc-section\" id=\"5_Name_the_property_under_multiplication_used_in_each_of_the_following\"><\/span>5. Name the property under multiplication used in each of the following:<span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p>(i)<img decoding=\"async\" style=\"height: 41px; width: 95px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image058.png\" \/><\/p>\n<p>(ii)<img decoding=\"async\" style=\"height: 41px; width: 139px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image059.png\" \/><\/p>\n<p>(iii)<img decoding=\"async\" style=\"height: 41px; width: 93px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image060.png\" \/><\/p>\n<p><strong>Ans 5<\/strong>.(i) 1 is the multiplicative identity.<\/p>\n<p>(ii) Commutative property.<\/p>\n<p>(iii) Multiplicative Inverse property.<\/p>\n<p style=\"text-align: center;\">NCERT Solutions for Class 8 Maths Exercise 1.1<\/p>\n<h6><span class=\"ez-toc-section\" id=\"6_Multiply_by_the_reciprocal_of\"><\/span>6. Multiply <img decoding=\"async\" style=\"height: 41px; width: 21px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image061.png\" \/>\u00a0by the reciprocal of <img decoding=\"async\" style=\"height: 41px; width: 29px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image062.png\" \/><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p>Ans 6.The reciprocal of <img decoding=\"async\" style=\"height: 41px; width: 24px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image063.png\" \/>\u00a0is <img decoding=\"async\" style=\"height: 41px; width: 36px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image064.png\" \/><\/p>\n<p>According to the question,<\/p>\n<p><img decoding=\"async\" style=\"height: 45px; width: 76px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image065.png\" \/>\u00a0= <img decoding=\"async\" style=\"height: 41px; width: 32px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image066.png\" \/><\/p>\n<p style=\"text-align: center;\">NCERT Solutions for Class 8 Maths Exercise 1.1<\/p>\n<h6><span class=\"ez-toc-section\" id=\"7_Tell_what_property_allows_you_to_compute\"><\/span>7. Tell what property allows you to compute<span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><img decoding=\"async\" style=\"height: 45px; width: 73px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image067.png\" \/>\u00a0as <img decoding=\"async\" style=\"height: 45px; width: 77px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image068.png\" \/><\/p>\n<p><strong>Ans 7<\/strong>. By using associative property of multiplication, we will compute as <img decoding=\"async\" style=\"height: 27px; width: 143px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image069.png\" \/>.<\/p>\n<p style=\"text-align: center;\">NCERT Solutions for Class 8 Maths Exercise 1.1<\/p>\n<h6><span class=\"ez-toc-section\" id=\"8_Is_the_multiplicative_inverse_of\"><\/span>8. Is <img decoding=\"async\" style=\"height: 41px; width: 15px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image070.png\" \/>\u00a0the multiplicative inverse of <img decoding=\"async\" style=\"height: 41px; width: 40px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image071.png\" \/><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p>Why or why not?<\/p>\n<p><strong>Ans 8.<\/strong> Since multiplicative inverse of a rational number <img decoding=\"async\" style=\"height: 15px; width: 13px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image047.png\" \/>\u00a0is <img decoding=\"async\" style=\"height: 45px; width: 37px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image048.png\" \/>\u00a0if <img decoding=\"async\" style=\"height: 41px; width: 63px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image049.png\" \/><\/p>\n<p>Therefore,<img decoding=\"async\" style=\"height: 45px; width: 71px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image072.png\" \/>\u00a0= <img decoding=\"async\" style=\"height: 41px; width: 47px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image073.png\" \/>\u00a0= <img decoding=\"async\" style=\"height: 17px; width: 20px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image046.png\" \/><\/p>\n<p>But its product must be positive 1.<\/p>\n<p>Therefore, <img decoding=\"async\" style=\"height: 41px; width: 15px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image070.png\" \/>\u00a0is not the multiplicative inverse of <img decoding=\"async\" style=\"height: 45px; width: 52px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image074.png\" \/><\/p>\n<p style=\"text-align: center;\">NCERT Solutions for Class 8 Maths Exercise 1.1<\/p>\n<h6><span class=\"ez-toc-section\" id=\"9_Is_03_the_multiplicative_inverse_of_Why_or_why_not\"><\/span>9. Is 0.3 the multiplicative inverse of <img decoding=\"async\" style=\"height: 41px; width: 32px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image075.png\" \/>\u00a0Why or why not?<span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><strong>Ans. 9.<\/strong> Since multiplicative inverse of a rational number <img decoding=\"async\" style=\"height: 15px; width: 13px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image047.png\" \/>\u00a0is <img decoding=\"async\" style=\"height: 45px; width: 37px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image048.png\" \/>\u00a0if <img decoding=\"async\" style=\"height: 41px; width: 63px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image049.png\" \/><\/p>\n<p>Therefore,<img decoding=\"async\" style=\"height: 41px; width: 55px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image076.png\" \/>\u00a0= <img decoding=\"async\" style=\"height: 41px; width: 51px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image077.png\" \/>\u00a0= 1<\/p>\n<p>Therefore, Yes 0.3 is the multiplicative inverse of <img decoding=\"async\" style=\"height: 41px; width: 28px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image078.png\" \/><\/p>\n<h6><span class=\"ez-toc-section\" id=\"10Write\"><\/span>10.Write:<span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p>(i) The rational number that does not have a reciprocal.<\/p>\n<p>(ii) The rational numbers that are equal to their reciprocals.<\/p>\n<p>(iii) The rational number that is equal to its negative.<\/p>\n<p><strong>Ans. 10<\/strong>.(i) 0<\/p>\n<p>(ii) 1 and <img decoding=\"async\" style=\"height: 17px; width: 20px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image046.png\" \/><\/p>\n<p>(iii) 0<\/p>\n<h5><span class=\"ez-toc-section\" id=\"11_Fill_in_the_blanks\"><\/span>11. Fill in the blanks:<span class=\"ez-toc-section-end\"><\/span><\/h5>\n<p>(i) Zero has ____________ reciprocal.<\/p>\n<p>(ii) The numbers ___________ and __________ are their own reciprocals.<\/p>\n<p>(iii) The reciprocal of <img decoding=\"async\" style=\"height: 19px; width: 21px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image079.png\" \/>\u00a0is _____________.<\/p>\n<p>(iv) Reciprocal of <img decoding=\"async\" style=\"height: 41px; width: 21px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image080.png\" \/>\u00a0where <img decoding=\"async\" style=\"height: 19px; width: 37px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image081.png\" \/>\u00a0is _____________.<\/p>\n<p>(v) The product of two rational numbers is always a ____________.<\/p>\n<p>(vi) The reciprocal of a positive rational number is _______________<\/p>\n<p><strong>Ans 11<\/strong>.(i) No<\/p>\n<p>(ii) 1, <img decoding=\"async\" style=\"height: 17px; width: 20px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image046.png\" \/><\/p>\n<p>(iii) <img decoding=\"async\" style=\"height: 41px; width: 23px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image082.png\" \/><\/p>\n<p>(iv) <img decoding=\"async\" style=\"height: 15px; width: 13px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/08\/maths\/1_1\/image083.png\" \/><\/p>\n<p>(v) Rational Number<\/p>\n<p>(vi) Positive<\/p>\n<h2><span class=\"ez-toc-section\" id=\"NCERT_Solutions_for_Class_8_Maths_Exercise_11\"><\/span>NCERT Solutions for Class 8 Maths Exercise 1.1<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>NCERT Solutions Class 8\u00a0Mathematics PDF (Download) Free from myCBSEguide app and myCBSEguide website. Ncert solution class 8\u00a0Mathematics includes text book solutions from Class 8 Maths Book . NCERT Solutions for CBSE Class 8 Maths have total 16 chapters. 8 Maths NCERT Solutions in PDF for free Download on our website. Ncert class 8 solutions PDF and Maths ncert class 8 PDF solutions with latest modifications and as per the latest CBSE syllabus are only available in myCBSEguide.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"CBSE_app_for_Class_8\"><\/span>CBSE app for Class 8<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>To download\u00a0NCERT Solutions for class 8 Social Science, Computer Science, Home Science,Hindi ,English, Maths Science do check myCBSEguide app or website. myCBSEguide provides sample papers with solution, test papers for chapter-wise practice, NCERT solutions, NCERT Exemplar solutions, quick revision notes for ready reference, CBSE guess papers and CBSE important question papers. Sample Paper all are made available through\u00a0<a href=\"https:\/\/play.google.com\/store\/apps\/details?id=in.techchefs.MyCBSEGuide&amp;referrer=utm_source%3Dmycbse_bottom%26utm_medium%3Dtext%26utm_campaign%3Dmycbseads\"><strong>the best app for CBSE students<\/strong><\/a>\u00a0and myCBSEguide website.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>NCERT Solutions for Class 8 Maths Exercise 1.1 Class 8 Maths book solutions are available in PDF format for free download. These ncert book chapter wise questions and answers are very helpful for CBSE exam. CBSE recommends NCERT books and most of the questions in CBSE exam are asked from NCERT text books. 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