Page 134 - Revised Maths Wisdom Class - 3

132 MATHS

(d) Length of a river m cm km

(e) Distance between two cities m cm km

2 Convert the following into centimetres.

(a) 5 m (b) 12 m (c) 9 m (d) 193 m (e) 16 m (f) 23 m

3 Convert the following into centimetres.

(a) 3 m 85 cm (b) 75 m 5 cm (c) 88 m 88 cm (d) 3 m 15 cm

(e) 14 m 20 cm (f) 90 m 35 cm (g) 16 m 16 cm (h) 48 m 62 cm
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4 Convert the following into metres.

(a) 8 km (b) 9 km 30 m (c) 5 km 65 m (d) 15 km 20 m

(e) 7 km 19 m (f) 8 km 20 m (g) 6 km 95 m (h) 2 km 25 m

5 Convert the following into kilometres and metres.

(a) 5312 m (b) 4325 m (c) 8009 m (d) 4040 m

(e) 7600 m (f) 5025 m (g) 6807 m (h) 5600 m

Addition of Lengths

To add the given lengths, we arrange them in two columns of ‘m’ and ‘cm’ or ‘km’ and
‘m‘ and then add them.

Let's Try
m cm

Example 1: Add 19 m 35 cm and 43 m 7 cm. 1 1
1 9 3 5
Solution: Arranging the given lengths in columns
of 'm' and 'cm', + 4 3 0 7

19 m 35 cm + 43 m 7 cm = 62 m 42 cm 6 2 4 2

m cm
Example 2: Add 47 m 75 cm and 92 m 35 cm.
1 1 1
Solution: 47 m 75 cm + 92 m 35 cm = 140 m 10 cm. 4 7 7 5
+ 9 2 3 5

1 4 0 1 0