Question

Find the missing numbers in the following fact family by establishing a multiplication pattern.

• A. 18, 5, 5
• B. 18,5,18
• C. 18, 5, 90
• D. 90, 18, 18

Answer 1

The correct option is C 18, 5, 90

18 $\times$ 5 = 90

Here, 18, 5 and 90 are members of the fact family.

We have to establish relation between these 3 numbers.

5 $\times$ ? = 90

5 multiplied by 18 gives 90.

90 $÷$ ? = 18

90 divided by 5 gives 18.

? $÷$ 5 = 18, here 90 is the number when divided by 5 gives 18.

Hence, the missing numbers are 18, 5 and 90.