Page 72 - Revised Maths Wisdom Class - 3

70 MATHS

(g) Th H T O (h) Th H T O (i) Th H T O

1 9 6 4 5 4
× 2 7 × 1 9 × 6 2

+ + +

2 Solve the following.

(a) 49 × 18 (b) 56 × 65 (c) 83 × 27 (d) 24 × 26
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(e) 32 × 22 (f) 47 × 74 (g) 50 × 40 (h) 36 × 43

Multiplication of 3-digit Number by 2-digit Number

Let us multiply 274 by 18

First arrange the numbers as per their place values and follow these steps:

Step-1: Multiply 274 by 8 ones. Th H T O

274 × 8 = 2192, here write 2192 in fi rst row. 2 7 4
×
Step-2: Multiply 274 by 1 ten. 1 8

274 × 1 ten = 274 × 10 = 2740 2 1 9 2 (274 × 8)
+ 2 7 4 0 (274 × 10)
Write 2740 in second row.
4 9 3 2
Step-3: Add the two numbers in both the rows.

2192 + 2740 = 4932

Thus, 274 × 18 = 4932

Let's Try

Example 1: Multiply 435 by 18. Example 2: Multiply 817 by 23.

Solution: Th H T O Solution: TTh Th H T O
4 3 5 8 1 7
× 1 8 × 2 3

3 4 8 0 2 4 5 1

+ 4 3 5 0 + 1 6 3 4 0
7 8 3 0 1 8 7 9 1