Ratios, Rates, Percent, and Proportions Exam

Front

What is a ratio?

Back

A ratio is a comparison of two quantities expressed as a fraction, using a colon, or in words. For example, the ratio of 4 to 1 can be written as 4:1.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

How do you simplify a ratio?

Back

To simplify a ratio, divide both terms by their greatest common factor (GCF). For example, to simplify the ratio 8:4, divide both by 4 to get 2:1.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is a rate?

Back

A rate is a specific kind of ratio that compares two different units. For example, speed is a rate that compares distance to time, such as 60 miles per hour.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal. For example, if 1/2 = 2/4, then these two ratios are in proportion.

Tags

CCSS.7.RP.A.2B

Front

How do you solve a proportion?

Back

To solve a proportion, cross-multiply the terms and set the products equal to each other. For example, if a/b = c/d, then ad = bc.

Front

What is the formula for finding a percentage?

Back

The formula for finding a percentage is: (part/whole) x 100 = percentage. For example, if you have 20 out of 50, the percentage is (20/50) x 100 = 40%.

Front

How do you convert a fraction to a percentage?

Back

To convert a fraction to a percentage, divide the numerator by the denominator and multiply by 100. For example, 3/4 = (3 ÷ 4) x 100 = 75%.

Front

What is the relationship between ratios and fractions?

Back

Ratios can be expressed as fractions. For example, the ratio 3:4 can be written as the fraction 3/4.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

How do you find the unit rate?

Back

To find the unit rate, divide the first quantity by the second quantity. For example, if you travel 150 miles in 3 hours, the unit rate is 150 miles ÷ 3 hours = 50 miles per hour.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is a benchmark percentage?

Back

A benchmark percentage is a commonly used percentage that helps in estimating or comparing values, such as 50%, 25%, or 10%.