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# Reference - Percent Word Problems, Percent Expressions, Converting

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These reference sheets cover converting between fractions, decimals, and percents, answering percents word problems using the four operations or proportions, and writing percent expressions such as modeling a decrease of 40% as s-0.4s or 0.6s.

Converting between Percents, Fractions, and Decimals

1. Explains and gives examples of converting between percents, fractions, and decimals (includes every combination).

Six Types of Percent Word Problems

1. Explains how to find a part given the whole and the percent of the whole.
2. Explains how to find the percent of the whole given the part and the whole.
3. Explains how to find the whole given a part and the percent of the whole.
4. Explains how to find the new value given the original value and percent of change.
5. Explains how to find the percent of change given the original and new values or how to find the percent error given the real value and estimate.
6. Explains how to find the original value given the new value and percent of change.

Six Types of Percent Word Problems - Proportion Strategy

1. Explains how to find all of the above but using proportions.

Percent Expressions

1. Explains how to use variables to write percent expressions that represent an increase, decrease, or percent of a number.
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