Page 128 - Mathematics_Std_4

Example 2

5 ÷ = 15
3
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Solution

Follow the steps shown in Example 1.
5 ÷ = 15 5 ÷ 15
3 3 1

5 1
= ×
3 15
5
=
45

= 1
9
1
Therefore, the answer is 5 or .
45 9

Exercise 7

1. 4 ÷ = 10 2. 8 ÷ = 16 3. 12 ÷ = 8
5 11 13
4. 12 5. 121 6. 81

7 ÷ = 6 90 ÷ = 55 10 ÷ = 9

7. 125 ÷ = 25 8. 3 ÷ = 28 9. 9 ÷ = 108
3 20 17

10. 396 ÷ = 22 11. 1 ÷ = 24 12. 6 ÷ = 12
5 64 20

13. 11 ÷ = 33 14. 5 ÷ = 46 15. 230 ÷ = 76
5 2 31

16. 15 ÷ = 8 17. 32 ÷ = 9 18. 53 ÷=
7
7 5 8
19. 6 ÷ = 15 20. 15 ÷ = 38
13 16

121

06/11/2024 17:17:39
MATHEMATICS STD 4 PB 2024.indd 121
MATHEMATICS STD 4 PB 2024.indd 121 06/11/2024 17:17:39