Page 111 - Start Up Mathematics_1

H T O
1 1 Step 3: Write the carried over digit in the hundreds
4 5
column.

× 3 So, 45 × 3 = 135.

1 3 5

H T O
3. 2 Step 1: Multiply the digit at the ones place by 4.
2 3 5
5 × 4 = 20

× 4 20 is a 2-digit number. Keep 0 in the

0 ones column and carry over 2 to the tens
column.

H T O
1 2 Step 2: Multiply the digit at the tens place by 4.
2 3 5
Add the carried over number to the result.

× 4 3 × 4 = 12 12 + 2 = 14

4 0 Keep 4 in the tens column and carry over

1 to the hundreds column.

H T O
1 2 Step 3: Multiply the digit at the hundreds place
2 3 5
by 4. Add the carried over number to the
× 4 result.

9 4 0 2 × 4 = 8 8 + 1 = 9

Write 9 in the hundreds column.

So, 235 × 4 = 940.

12 Find the product.

H T O H T O H T O
(a) (b) (c)
2 4 6 5 4 9

× 7 × 8 × 3

103