Chapter 3 Rates and Ratios

Front

What is a ratio?

Back

A ratio is a comparison of two quantities that shows the relative size of one quantity to another, often expressed as 'a to b'.

Front

How do you simplify a ratio?

Back

To simplify a ratio, divide both terms by their greatest common divisor (GCD).

Front

What is an equivalent ratio?

Back

Equivalent ratios are ratios that express the same relationship between two quantities, even if the numbers are different.

Front

If the ratio of boys to girls is 3 to 2, how many boys are there if there are 10 girls?

Back

There are 15 boys.

Front

What is the missing number in the ratio 4:__ = 8:12?

Back

The missing number is 6.

Front

How do you convert a ratio to a fraction?

Back

To convert a ratio to a fraction, write the first quantity as the numerator and the second quantity as the denominator.

Front

What does it mean for fractions to be equivalent?

Back

Fractions are equivalent if they represent the same part of a whole, even if they have different numerators and denominators.

Front

What is the ratio of red apples to green apples if there are 8 red apples and 4 green apples?

Back

The ratio is 2 to 1.

Front

How can you find a missing number in a ratio table?

Back

You can find a missing number by using equivalent ratios or cross-multiplication.

Front

What is the relationship between rates and ratios?

Back

Rates are a specific type of ratio that compares two quantities with different units, such as miles per hour.