Rates, Ratios, proportions and percents

Front

What is a ratio?

Back

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

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, such as miles per hour or price per item.

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.

Tags

CCSS.7.RP.A.2A

Front

How do you convert a fraction to a percent?

Back

To convert a fraction to a percent, divide the numerator by the denominator and then multiply by 100.

Front

What is 25% of 80?

Back

20

Tags

CCSS.6.RP.A.3C

Front

What is the formula to find the percent of a number?

Back

Percent = (Part/Whole) x 100.

Front

What does it mean if two ratios are proportional?

Back

It means that the two ratios express the same relationship between their quantities.

Tags

CCSS.6.RP.A.3A

Front

How do you express 3/4 as a percent?

Back

75%.

Front

What is the relationship between ratios and fractions?

Back

Ratios can be expressed as fractions, where the first quantity is the numerator and the second quantity is the denominator.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is the percent equivalent of 1/2?

Back

50%.