Page 127 - Start Up Mathematics_1

Relation between Multiplication and Division

Multiplication Division

Number ending in
Number ending in
• Multiplication is repeated addition. • Division is repeated subtraction.
For example, to get 2 mangoes each For example, to distribute 12 mangoes
for 6 people, we add 2 mangoes 6 among 2 people, we subtract 2
times. mangoes from 12 repeatedly 6 times.
are even numbers.e even numbers.
ar
2 + 2 + 2 + 2 + 2 + 2 = 12 12 – 2 – 2 – 2 – 2 – 2 – 2 = 0
Thus, 2 × 6 = 12. Thus, 12 ÷ 2 = 6.
• There are two multiplication facts for • There are two division facts for each
each division fact. multiplication fact.

For example, 12 ÷ 2 = 6 means For example, 2 × 6 = 12 means
2 × 6 = 12 and 6 × 2 = 12. 12 ÷ 2 = 6 and 12÷ 6 = 2.

5 Complete the division and multiplication facts.

21 ÷ 7 = 3

(a) 7 × =

21 ÷ 3 = 7

÷ =

(b) 9 × 5 = 45

÷ =

24 ÷ 4 = 6

(c) × 6 =

24 ÷ 6 =

20 ÷ =

(d) 10 × 2 =

20 ÷ =

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