Page 69 - ICSE Math 4

Similarly, there are two division facts for each mul plica on fact.
For example, division facts for 7 × 9 = 63 are 63  7 = 9 and 63  9 = 7.

Exercise 6.4

1. Write two mul plica on facts for each division fact.

(a) 36 ÷ 9 = 4 (b) 42 ÷ 6 = 7
(c) 24 ÷ 4 = 6 (d) 40 ÷ 8 = 5

2. Write two division facts for each mul plica on fact.

(a) 7 × 8 = 56 (b) 9 × 5 = 45
(c) 8 × 4 = 32 (d) 4 × 9 = 36

Long Division

Long division method is useful for dividing large numbers. Before doing long division, we
need to know the mul plica on tables and division facts.

Example 4: Divide 63 by 3.
Solu on: Step 1: Start from the tens place of the dividend. 2

6 tens ÷ 3 = 2 tens (3 × 2 = 6) 3 63
– 6
Write 2 in the tens place of the quo ent.
0
Subtract 6 from the tens place of the dividend.

6 – 6 = 0 Top Tip
2 When we divide a
Step 2: Bring down the ones digit,
3 63 2-digit number by a
i.e., 3 of the dividend. 1-digit number, we can
– 6
get a quotient which is
03
either a 1-digit number
or a 2-digit number.

Step 3: 3 ones ÷ 3 = 1 one 21

Write 1 in the ones place of the quo ent. 3 63
Subtract 3 from the ones place of the dividend. – 6

3 – 3 = 0 03
So, 63  3 = 21. – 3
0

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