Page 136 - Revised Maths Wisdom Class - 3

134 MATHS

Let's Tryt's Try m cm
Le
6 10 1 10
Example 1: Subtract 54 m 19 cm from 70 m 20 cm. 7 0 2 0

Solution: Arrange the given lengths in columns – 5 4 1 9

70 m 20 cm – 54 m 19 cm 1 6 0 1
= 16 m 1 cm km m

Example 2: Subtract 27 km from 100 km 60 m. 0 9 10
1 0 0 0 6 0
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Solution: 100 km 60 m – 27 km – 2 7 0 0 0
= 73 km 60 m 0 7 3 0 6 0

Example 3: Find the diff erence between km m

29 km 260 m and 18 km 375 m. 8 11 15 10

Solution: 29 km 260 m – 18 km 375 m 2 9 2 6 0

= 10 km 885 m. – 1 8 3 7 5
1 0 8 8 5

Exercise 10C

1 Subtract the following.

(a) m cm (b) m cm (c) m cm
3 5 2 3 8 0 8 4 9 9 9 0
– 1 6 2 0 – 6 3 1 2 – 1 9 8 4

(d) km m (e) km m (f) km m
6 4 8 5 0 1 1 2 8 1 5 9 0 0 5 5

– 4 3 2 8 5 – 7 4 1 7 2 – 3 7 1 4 8

2 Find the diff erence between:
(a) 23 m 9 cm and 16 m 14 cm. (b) 107 km 623 m and 73 km 190 m.

(c) 83 km 275 m and 80 km 577 m. (d) 78 m 19 cm and 46 m 5 cm.