Ratio and Proportion

Front

What is a ratio?

Back

A ratio is a comparison of two quantities by division, expressed as 'a to b' or a:b.

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Front

How do you solve a proportion?

Back

To solve a proportion, cross-multiply the terms and then solve for the unknown.

Front

What is the formula for finding a ratio?

Back

The formula for finding a ratio is: Ratio = Part / Whole.

Front

If the ratio of boys to girls in a class is 3:4, how many boys are there if there are 28 girls?

Back

There are 21 boys. (3/4 = x/28, x = 21)

Front

What is the first step in solving the expression 3 + 4 x 6 - 4?

Back

The first step is multiplication (4 x 6 = 24).

Front

What is the cost of one slice of pizza if a pizza with 8 slices costs $12?

Back

The cost of one slice is $1.50.

Front

If a recipe calls for 2 cups of flour for every 3 cups of sugar, what is the ratio of flour to sugar?

Back

The ratio of flour to sugar is 2:3.

Front

What does it mean if two ratios are equivalent?

Back

It means that they represent the same relationship between quantities.

Front

How can you express the ratio of 5 to 2 in fraction form?

Back

The ratio of 5 to 2 can be expressed as the fraction 5/2.