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 variable.

Front

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

Back

If a/b = c/d, then ad = bc, where a, b, c, and d are numbers.

Front

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

Back

The ratio of sugar to flour is 2:3.

Front

What is the first step in solving a proportion problem?

Back

Identify the known values and the unknown variable.

Front

If 4 apples cost $2, how much do 10 apples cost?

Back

$5 (Set up the proportion: 4/2 = 10/x, cross-multiply to find x).

Front

What is the relationship between ratios and proportions?

Back

Ratios compare two quantities, while proportions show that two ratios are equal.

Front

How can you check if two ratios form a proportion?

Back

Cross-multiply the ratios; if the products are equal, they form a proportion.

Front

What is the simplest form of the ratio 10:15?

Back

The simplest form is 2:3.

Front

If a car travels 120 miles in 2 hours, what is its speed in miles per hour?

Back

60 miles per hour (Speed = Distance/Time).