Percents & Percent of Change

Front

What is a percent?

Back

A percent is a ratio expressed as a fraction of 100. It represents a part of a whole.

Front

How do you calculate the percent of a number?

Back

To find the percent of a number, multiply the number by the percent (in decimal form). For example, to find 20% of 60, calculate 60 * 0.20 = 12.

Tags

CCSS.6.RP.A.3C

Front

What is the formula to find the whole when given a part and a percent?

Back

The formula is: Whole = Part / (Percent in decimal form). For example, if 9 is 45% of a number, the number is 9 / 0.45 = 20.

Tags

CCSS.6.RP.A.3C

Front

How do you find the original number when given a percent of it?

Back

Use the formula: Original Number = Given Number / (Percent in decimal form). For example, if 24 is 75% of the original number, the original number is 24 / 0.75 = 32.

Tags

CCSS.6.RP.A.3C

Front

What is percent of change?

Back

Percent of change measures how much a quantity has increased or decreased relative to its original amount, expressed as a percentage.

Tags

CCSS.6.RP.A.3C

Front

How do you calculate percent of change?

Back

Percent of Change = ((New Value - Original Value) / Original Value) * 100. For example, if enrollment increased from 1275 to 1350, the percent of change is ((1350 - 1275) / 1275) * 100 = 5.88%.

Tags

CCSS.6.RP.A.3C

Front

What does a positive percent of change indicate?

Back

A positive percent of change indicates an increase in value.

Tags

CCSS.6.RP.A.3C

Front

What does a negative percent of change indicate?

Back

A negative percent of change indicates a decrease in value.

Tags

CCSS.6.RP.A.3C

Front

How do you round a percent to the nearest whole number?

Back

To round a percent to the nearest whole number, look at the first decimal place. If it's 5 or higher, round up; if it's 4 or lower, round down.

Front

What is the percent increase from $52 to $125?

Back

Percent Increase = ((125 - 52) / 52) * 100 = 140.38%, rounded to 140%.

Tags

CCSS.6.RP.A.3C