Page 88 - Start Up Mathematics_3

Example 4: What are the division facts for 2 × 5 = 10? Show with an example.

Solution: If 10 ice creams are divided equally among 5 children, each child gets

2 ice creams.
10 ÷ 5 = 2

If 10 ice creams are divided
equally among 2 children, each
child gets 5 ice creams.

10 ÷ 2 = 5
Thus, 10 ÷ 5 = 2 and 10 ÷ 2 = 5.

This shows that 2 × 5 = 10.

Hence, for the multiplication fact
2 × 5 = 10, the two division facts
are 10 ÷ 5 = 2 and 10 ÷ 2 = 5.
Similarly, there are two multiplication facts for each division fact. Consider the example
given above.

There are 5 children and each child eats 2 ice creams, then together they eat 10
ice creams.

5 × 2 = 10
If there are 2 children and each child eats 5 ice creams, then together they eat 10

ice creams.
2 × 5 = 10

Thus, 5 × 2 = 10 and 2 × 5 = 10.
This shows that 10 ÷ 5 = 2. Hence, for the division fact 10 ÷ 5 = 2, the two multiplication

facts are 5 × 2 = 10 and 2 × 5 = 10.

EXERCISE 6.4

1. Write two division facts for each multiplication fact.

Multiplication fact Division facts

(a) 7 × 8 = 56 ___________________ ___________________
(b) 9 × 5 = 45 ___________________ ___________________

(c) 8 × 4 = 32 ___________________ ___________________

(d) 10 × 9 = 90 ___________________ ___________________
(e) 2 × 1 = 2 ___________________ ___________________

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