Page 162 - Mathematics_Std_4

Example 2

hours minutes

8 00
FOR ONLINE READING ONLY
− 3 53

Steps Solution

1. Subtract minutes: 0 – 53, it is not hours minutes
sufficient. Take 1 hour from the 7 60

8 hours, then convert it into 60 minutes. − 3 5
Add minutes: 60 + = 00 60minutes. 4 07
Now, subtract minutes: 60 − =53 7.
Write 07 in the minutes column.

2. Subtract hours: −=7 3 4.Write 4 in the
hours column

Therefore, the answer is 4 hours 7 minutes.

Example 3

hours minutes
7 27
− 3 58

Solution

hours minutes
7 27

− 3 58
3 29

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06/11/2024 17:17:58
MATHEMATICS STD 4 PB 2024.indd 155
MATHEMATICS STD 4 PB 2024.indd 155 06/11/2024 17:17:58