7th Grade Milestone Review - Solving Proportions

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' or a/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 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 variable.

Front

What is the formula for finding the missing value in a proportion?

Back

If a/b = c/d, then ad = bc, where a, b, c, and d are the terms of the proportion.

Front

If there are 18 dog toys, 10 are frisbees. What is the ratio of bones to frisbees?

Back

The ratio of bones to frisbees is 4/5.

Front

If a 6-ounce package contains 45 pieces, how many pieces are in a 10-ounce package?

Back

There would be 75 pieces in a 10-ounce package.

Front

If a couple rests for 25 minutes in 5 hours, how long do they rest in 8 hours?

Back

They would rest for 40 minutes in 8 hours.

Front

If 150 people wait 20 minutes for a ride, how long do 240 people wait?

Back

The waiting time for 240 people is 32 minutes.

Front

What is the cross-multiplication method?

Back

Cross-multiplication involves multiplying the numerator of one ratio by the denominator of the other ratio to find an unknown.