Page 120 - Start Up Mathematics_3

Quick Tip
1 109 m 3 592 m
When we convert m into km and m,
the last three digits always stand for m. 1 km 109 m 3 km 592 m

EXERCISE 8.2

1. Which unit (cm, m or km) will you use to measure the following lengths/
distances?

(a) Length of a bus _____ (b) Length of your Maths book _____

(c) Length of an eraser _____ (d) Distance between India and Europe _____
(e) Height of a tree _____ (f) Length of river Ganga _____

(g) Length of a stapler _____ (h) Length of a building _____

2. Convert into metres.

(a) 7 km (b) 9 km (c) 16 km (d) 5 km 725 m
(e) 18 km 210 m (f) 40 km 150 m (g) 52 km (h) 2 km 68 m

3. Convert into kilometres and metres.

(a) 3000 m (b) 2300 m (c) 5670 m (d) 9210 m

(e) 6660 m (f) 4297 m (g) 8372 m (h) 5111 m

Weight

Weight means how heavy or light an object is. A light object is measured in grams
while a heavy object is measured in kilograms.

1000 grams = 1 kilogram or 1000 g = 1 kg
We have standard weights to weigh an object. Some of the standard weights available
are given below.

g
50 100 250 500
g
g g

1 2 5 10
kg kg kg kg

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