Exercise 8.4 full exercise

1. Express as rupees using decimals. (a) 5 paise (b) 75 paise (c) 20 paise (d) 50 rupees 90 paise (e) 725 paise 2. Express as metres using decimals. (a) 15 cm (b) 6 cm (c) 2 m 45 cm (d) 9 m 7 cm (e) 419 cm 3. Express as cm using decimals. (a) 5 mm (b) 60 mm (c) 164 mm (d) 9 cm 8 mm (e) 93 mm 4. Express as km using decimals. (a) 8 m (b) 88 m (c) 8888 m (d) 70 km 5 m 5. Express as kg using decimals. (a) 2 g (b) 100 g (c) 3750 g (d) 5 kg 8 g (e) 26 kg 50 g 8.6 Addition of Numbers with Decima

Question 1. Express as rupees using decimals: (a) 5 paise (b) 75 paise (c) 20 paise (d) 50 rupees 90 paise (e) 725 paise Answer: (a)  1 paisa = Rs.  5 paise =  x 5 = Rs. 0.05 (b)  1 paisa = Rs.  75 paise =  x 5 = Rs. 0.75 (c)  1 paisa = Rs.  20 paise =  x 5 = Rs. 0.05 (d)  1 paisa = Rs. Rs. 50 + 90 paise = 50 + x 90 = Rs. 50.90 (e)  1 paisa = Rs.  725 paise =  x 725  = Rs. 7.25 Question 2. Express as meters using decimals: (a) 15 cm (b) 6 cm (c) 2 m 45 cm (d) 9 m 7 cm (e) 419 cm Answer: (a)  1 cm =  m  15 cm =  x 15 = 0.15 m (b)  1 cm =  m  6 cm =  x 6 = 0.06 m (c)  1 cm =  m   2 m 45 cm = 2 +  x 45 = 2.45 m (d)  1 cm =  m  9 m 7 cm = 9 + x 7 = 9.07 m (e)  1 cm =  m  419 cm =  x 419 =  4.19 m Question 3. Express as cm using decimals: (a) 5 mm (b) 60 mm (c) 164 mm (d) 9 cm 8 mm (e) 93 mm Answer: (a)  1 mm =  cm  5 mm =  x 5 = 0.5 cm (b)  1 mm =  cm  60 mm =  x 60 = 6 cm (c)  1 mm =  cm  164 mm =  x 164 = 16.4 cm (d)  1 mm =  cm  9 cm 8 mm = 9 +