Page 31 - Mathematics_Std_4

Example 2

×27 = 12

FOR ONLINE READING ONLY
Solution Steps
1. 2 ×=7 14. Write 4 in the ones place.
27 Regroup 10 ones into 1 tens. Shift 1 tens to

× 12 the tens place.
54 2. × 2 =20 40. Write 4 tens. Add tens:
+270 4 +=1 5. Write 5 in the tens place.

324 3. 10 ×=7 70. Write 7 in the tens place and 0
in the ones place.

4. × 10 =20 200. Write 2 in the hundreds
place.

5. Add the results from Steps 1 to 4:
+ 54 = 270 324.

Therefore, 27 × =12 324.

Example 3

×78 69 =

Solution Steps

78 1. 9 ×=8 72. Write 2 in the ones place. Regroup

× 69 70 ones into 7 to tens. Shift 7 tens to the tens

702 place
+ 4680 2. 9 × =70 630. Write 63 tens. Add tens:

5382 + 63 7 70. Write 0 in the tens place and 7
=

in the hundreds place.

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MATHEMATICS STD 4 PB 2024.indd 24 06/11/2024 17:16:59
06/11/2024 17:16:59
MATHEMATICS STD 4 PB 2024.indd 24