Big Ideas Math: Modeling Real Life, Grade 7
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Big Ideas Math: Modeling Real Life, Grade 7 View details
2. The Percent Proportion
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Exercise 4 Page 245

To write a fraction as a decimal, divide the numerator by the denominator. To write a decimal as a percent, multiply by 100 and add the percent symbol.

Decimal: 0.621
Percent: 62.12 %.

Practice makes perfect

Fractions, decimals, and percents are three ways to show parts of a whole. We want to write a fraction as a decimal and as a percent. Let's do these things one at a time.

Decimal

To write a fraction as a decimal, we divide the numerator by the denominator.
division
We found a pattern in the given quotient! 41÷ 66 = 0.6212121... We can write this repeating pattern as 0.621. 41÷ 66 = 0.621 We found that 4166 expressed as a decimal is 0.621.

Percent

To write a fraction as a percent, we can use the equivalent decimal. To write a decimal as a percent, we multiply by 100 and add the percent symbol %.
We found that 0.621 expressed as a percent is 62.12 %.