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Maths Exercices

Identify equivalent ratios

Two ratios are equivalent if their cross products are equal.


Are these ratios equivalent?



The cross products are equal, so the ratios are equivalent.

Are these ratios equivalent?

3 to 5 and 6 to 10

Write the ratios as fractions.

and

Compare the two cross products. Multiply the numerator of one fraction and the denominator of the other.

3 × 10 
?
=
 5 × 6

30  =  30

The cross products are equal, so the ratios are equivalent.

Are these ratios equivalent?

9 to 7 and 63 to 49

Yes
No