Page 30 - Mathematics_Std_4

7. 88 8. 59 9. 78
× 8 × 3 × 5

FOR ONLINE READING ONLY

10. 27 11. 32 12. 90
× 9 × 2 × 8

13. 79 14. 98 15. 65
× 6 × 7 × 4

Multiplication of two-digit numbers by a two-digit multiplier

Example 1

×23 = 21

Write multiplication problem vertically aligning the digits by
place values

Solution Steps

1. ×=1 3 3. Write 3 in the ones.

23 2. × 1 = 20 20. Write 2 in the tens place.
× 21 3. 20 × =3 60. Write 6 in the tens place and

23 0 in the ones place.
+ 460 4. 20 × =20 400.Write 4 in the hundreds

483 place.
5. Add the results from Steps 1 to 4:
+ 23 = 460 483.

Therefore, ×23 21 483.
=

23

06/11/2024 17:16:59
MATHEMATICS STD 4 PB 2024.indd 23
MATHEMATICS STD 4 PB 2024.indd 23 06/11/2024 17:16:59