Page 56 - ICSE Math 4

Step 3: Add the products obtained in step 1 T O
and step 2.
2 4
48 + 240 = 288
× 1 2
So, 24 × 12 = 288.
4 8 (24 × 2)

+ 2 4 0 (24 × 10)
2 8 8 Product

(b) H T O (c) H T O

2 3 4 1 3 2

× 2 2 × 2 1 3
1 1 1 1
4 6 8 (234 × 2) 3 9 6 (132 × 3)

+ 4 6 8 0 (234 × 20) 1 3 2 0 (132 × 10)
5 1 4 8 Product + 2 6 4 0 0 (132 × 200)

2 8 1 1 6 Product

So, 234 × 22 = 5,148. So, 132 × 213 = 28,116.

Exercise 5.3

1. Find the following products.
(a) 14 × 22 (b) 23 × 12 (c) 112 × 4 (d) 301 × 2

(e) 213 × 13 (f) 342 × 21 (g) 421 × 121 (h) 133 × 132

2. Mul ply the given numbers.

(a) 23 by 13 (b) 42 by 22 (c) 124 by 12 (d) 43 by 21

(e) 143 by 21 (f) 432 by 22 (g) 115 by 11 (h) 213 by 23

Multiplication of Numbers (with carry over)

Example 5: Mul ply the following numbers.
(a) 76 by 37 (b) 475 by 234

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