# Exponents and Powers class 8 Notes Mathematics

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## Class 8 Mathematics notes Chapter 12 Exponents and Powers

Download CBSE class 8th revision notes for chapter 12 Exponents and Powers in PDF format for free. Download revision notes for Exponents and Powers class 8 Notes and score high in exams. These are the Exponents and Powers class 8 Notes prepared by team of expert teachers. The revision notes help you revise the whole chapter 12 in minutes. Revision notes in exam days is one of the best tips recommended by teachers during exam days.

## CBSE Class 8 Revision Notes Maths Exponents and Powers

• Numbers with exponents obey the following laws of exponents.
(a)
(b)
(c)
(d)
(e)
(f)
• Very small numbers can be expressed in standard form using negative exponents.
• Use of Exponents to Express Small Number in Standard form:
(i)  Very large and very small numbers can be expressed in standard form.
(ii)  Standard form is also called scientific notation form.
(iii)  A number written as is said to be in standard form if m is a decimal number such that and n is either a positive or a negative integer.
• Examples: 150,000,000,000 = 1.5 x 1011.
• Exponential notation is a powerful way to express repeated multiplication of the same number. For any non-zero rational number ‘a’ and a natural number n, the product a x a x a x ……….. x a(n times) = an.
It is known as the nth power of ‘a’ and is read as ‘a’ raised to the power n’. The rational number a is called the base and n is called exponent.

## CBSE Class 8 Revision Notes and Key Points

Exponents and Powers class 8 Notes Mathematics. CBSE quick revision note for class-8 Mathematics, Chemistry, Math’s, Biology and other subject are very helpful to revise the whole syllabus during exam days. The revision notes covers all important formulas and concepts given in the chapter. Even if you wish to have an overview of a chapter, quick revision notes are here to do if for you. These notes will certainly save your time during stressful exam days.

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