7th Grade Milestone Review - Solving Proportions

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

If 150 people wait 20 minutes, how long will 240 people wait?

Back

32 minutes.

Front

What is the formula for direct variation?

Back

y = kx, where k is the constant of variation.

Front

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

Back

75 pieces.

Front

What is the relationship between distance, rate, and time?

Back

Distance = Rate × Time.

Front

If a recipe calls for 1.5 cups of milk for 3 cups of flour, how much milk is needed for 5 cups of flour?

Back

2.5 cups of milk.

Front

What does it mean if two quantities are directly proportional?

Back

If one quantity increases, the other quantity increases at a constant rate.

Front

How do you find the constant of variation in a direct variation problem?

Back

Divide the value of y by the value of x.

Front

If a car travels 280 miles in 7 hours, how far will it travel in 12 hours?

Back

480 miles.