Page 63 - Mathematics_Std_4

Solution Steps

m cm 1. Subtract cm: 45 cm – 20 cm = 25 cm.
4 45 Write 25 cm in the cm column.

− 2 20
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25

m cm 2. Subtract m: 4 m – 2 m = 2 m. Write 2
4 45 in the m column.
− 2 20

2 25

Therefore, the answer is 2 m 25 cm.

Example 2

km m
12 200

− 4 950

Solution Steps

km m 1. Subtract metres:
12 200 200 m − 950 m, it is not sufficient.

− 4 950 Take 1 km from 12 km and convert it
into 1000 m.

2. Add metres:
km m +1000 m = 200 m 1200 m.

11 1200 Now, subtract metres:
− 4 950 − 1200 m = 950 m 250 m. Write 250
250 in the m column. Remember that 11

km remained in the km column.

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MATHEMATICS STD 4 PB 2024.indd 56 06/11/2024 17:17:09
MATHEMATICS STD 4 PB 2024.indd 56