Proportions Flashcard (Part 1)

Front

What is a ratio?

Back

A ratio is a comparison of two quantities, showing how many times one value contains or is contained within the other.

Front

How do you solve a proportion?

Back

To solve a proportion, cross-multiply the two ratios and set them equal to each other, then solve for the unknown.

Front

What is the formula for speed?

Back

Speed = Distance ÷ Time.

Front

If 3 shirts cost $45, how much does 1 shirt cost?

Back

$15.

Front

What is the relationship between inches and feet?

Back

1 foot = 12 inches.

Front

How do you find the total cost of multiple items?

Back

Multiply the cost of one item by the number of items.

Front

What is a unit rate?

Back

A unit rate is a ratio that compares a quantity to one unit of another quantity.

Front

If a car travels 240 miles in 4 hours, what is its speed per hour?

Back

60 miles per hour.

Front

What is the missing entry in the sequence: 10, __, 20, 30?

Back

15.

Front

How do you convert inches to feet?

Back

Divide the number of inches by 12.