Modeling Percents Homework

Front

What is a percent?

Back

A percent is a way to express a number as a fraction of 100. It is denoted by the symbol '%'. For example, 50% means 50 out of 100.

Front

How do you convert a percent to a decimal?

Back

To convert a percent to a decimal, divide the percent by 100. For example, 25% as a decimal is 0.25 (25 ÷ 100 = 0.25).

Front

How do you convert a decimal to a percent?

Back

To convert a decimal to a percent, multiply the decimal by 100. For example, 0.75 as a percent is 75% (0.75 × 100 = 75).

Front

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

Back

The formula to find the percent of a number is: Percent = (Part/Whole) × 100. For example, if you have 20 out of 50, the percent is (20/50) × 100 = 40%.

Front

What does it mean if a square is shaded in a grid model?

Back

If a square is shaded in a grid model, it represents a part of the whole. The shaded area can be used to calculate the percent of the total area that is shaded.

Front

If 15 out of 100 squares are shaded, what percent is shaded?

Back

15% is shaded (15 out of 100 = 15%).

Front

What is the decimal representation of 45%?

Back

The decimal representation of 45% is 0.45 (45 ÷ 100 = 0.45).

Front

If a grid has 20 squares and 8 are shaded, what percent is shaded?

Back

40% is shaded (8 out of 20 = 0.4, and 0.4 × 100 = 40%).

Front

What is the relationship between fractions and percents?

Back

Front

How do you find the unshaded percent in a grid?

Back

To find the unshaded percent, subtract the shaded percent from 100%. For example, if 30% is shaded, then 70% is unshaded (100% - 30% = 70%).