Page 128 - Start Up Mathematics_5

(b) 36 km 80 m + 18 km 9 m = ___________ km

(i) 54.89 km (ii) 54.089 km (iii) 55.70 km (iv) 55.07 km
(c) Subtract 264 g 98 mg from 500 g. The result is ___________.

(i) 326 g 12 mg (ii) 236 g 02 mg (iii) 325 g 92 mg (iv) 235 g 902 mg

SOME NCERT TEXTBOOK QUESTIONS

1. A 2 rupee coin weighs 6 g. What is the weight of a sack with:

(a) 2200 coins? _____ kg _____ g (b) 3000 coins? _____ kg
2. If 100 one rupee coins weight 485 g then how much will 10000 coins weigh?
_____ kg _____ g

3. Mollie used her measuring bottle to find the volume of five-rupee coins. She found
that 9 five-rupee coins push up 10 mL of water.
Mollie puts some five-rupee coins in the measuring bottle. How many coins has she
put in it:
(a) if 30 mL water is pushed up? ____________

(b) if 60 mL water is pushed up? ____________

VALUES AND LIFE SKILLS

1. A box of energy bars weighs 1,500 grams. What is the weight of 3 such boxes in
kilograms? Can energy bar be a substitute for chocolate? Give reasons.

2. Sonali is going to meet her grandparents who live far away. She travels 19 km
250 m by car, 3 km 75 m by train and 7 km by bus. How far do Sonali’s grandparents
live from her house? How should you take care of your grandparents?

SCRATCH YOUR BRAIN

1. Convert the following.
(a) 97 km 5 hm 8 dam to cm (b) 34 g 21 dg 7 cg to kg
(c) 17 daL 2 L 29 mL to L (d) 66 dm 15 cm 8 mm to m

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