Question

Complete the table using multiplication to find the ratios that are equivalent 4:5

Answer 1

we have the ratio

4/5

so

Multiplying by 2 both numbers

(4*2)/(5*2)=8/10

Multiplying by 4 both numbers

(4*4)/(5*4)=16/20

Multiplying by 3 both numbers

(4*3)/(5*3)=12/15

if you multiply a fraction (or ratio) by 1 , you obtain the same fraction or the same ratio

so

4/5*1=4/5

Remember that

2/2 or 3/3 or 5/5 are fractions equals to 1

so

4/5*(2/2) is the same that 4/5*1

4/5*(2/2)=8/10 ------> 4/5 and 8/10 are equivalent fractions

answer is

4 8 16 12

5 10 20 15