Ratios Unit Test (2)

Front

What is a ratio?

Back

A ratio is a comparison of two quantities, showing how many times one value contains or is contained within the other.

Front

How do you determine if two ratios are equivalent?

Back

Two ratios are equivalent if they simplify to the same fraction or if their cross products are equal.

Front

What is the ratio of red paint to yellow paint if Kevin mixes 3 oz of red with 5 oz of yellow?

Back

The ratio of red paint to yellow paint is 3:5.

Front

If Kevin uses 9 oz of red paint, how much yellow paint should he mix?

Back

He should mix 15 oz of yellow paint.

Front

Convert 72 inches to feet.

Back

72 inches = 6 feet.

Front

What is the formula to solve a proportion?

Back

To solve a proportion, cross-multiply the terms and set them equal to each other.

Front

If a:b = 3:4, what is the value of a when b = 8?

Back

a = 6.

Front

What is the missing value in the ratio table if the ratio is 20:44?

Back

The missing value is 20.

Front

How do you simplify the ratio 6:12?

Back

6:12 simplifies to 1:2.

Front

What is the cross product of the ratios 3:4 and 6:12?

Back

The cross product is 3*12 = 36 and 4*6 = 24, which are not equal, so the ratios are not equivalent.