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2. Divide by repeated subtraction. Correct the numbers in the circles wherever
needed. One example is done for you.

3 3

(a) 12 ÷ 3 = 4 12 – 3 – 3 – 2 – 2

(b) 18 ÷ 6 = 18 – 6 – 3 – 3

(c) 16 ÷ 2 = 16 – 2 – 2 – 2 – 4 – 4 – 2 – 4 – 2

(d) 25 ÷ 5 = 25 – 5 – 5 – 3 – 5 – 3

(e) 32 ÷ 4 = 32 – 8 – 4 – 8 – 8 – 4 – 4 – 8 – 4

Division on a Number Line

We can also divide numbers by repeated subtraction on a number line.
Example 2: Divide 21 by 7 on a number line.

Solution: Start from 21. Jump 7 steps back each time to reach 0.

7 – 7 = 0 14 – 7 = 7 21 – 7 = 14

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
Since after 3 back jumps of 7 steps each, we reached 0 from 21.
So, 21 ÷ 7 = 3.

Exercise 5.3

Divide on a number line.

(a) 18 ÷ 6 =

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

Start from . Go back steps times to reach 0.

So, ÷ = .

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