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Big Ideas Math: Modeling Real Life, Grade 7
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Big Ideas Math: Modeling Real Life, Grade 7 View details
1. Fractions, Decimals and Percents
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Exercise 19 Page 239

To write a percent as a decimal, move the decimal point two places to the left and remove the percent symbol.

Decimal: 0.492
Model:

Practice makes perfect
Fractions, decimals, and percents are three ways to show parts of a whole. We want to write a percent as a decimal. First, notice the line on top of 92 in the given expression. 49.92% Recall that this line represents a repeating pattern. 49.92%=49.929292... % Now, to write a percent as a decimal, we ignore the percent symbol and move the decimal point two places to the left.
percent as decimal
We found that 49.92 % expressed as a decimal is 0.4992. We can also use a model to represent this number.
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arrow_right Try It p.236-237
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Try It 2 (Page 236)
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arrow_right Self-Assessment for Concept & Skills p.237
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arrow_right Self-Assessment for Problem Solving p.238
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arrow_right Review & Refresh p.239
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