Book 8:
Ratio and Proportion You Will
Book 8:
Ratio and Proportion
You Will
Determine when fractions are equivalent
Convert fractions to decimals and decimals to fractions
Convert decimals to percents and percents to decimals
Solve for unknowns in problems involving the basic operations
Subjects
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Chapter 1 |
Chapter 2 |
Chapter 3 |
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Video Highlights
David and Martha explore ratio and proportion. Martha helps a neighbor’s daughter convert numbers to fractions, decimals, and percents. Martha, Bill, Sue, and Todd solve for unknowns in problems with addition, subtraction, multiplication, and division.
Summary/Terminology
Balance
Colon
Inverse operations
Percent
Proportion
Ratio
Simplify
Three quick and easy methods:
1. To convert a fraction to a decimal, divide the denominator into the numerator
2. To convert a decimal into a percent, move the decimal 2 spaces to the right and add the % sign.
3. To convert a percent to a decimal, move the decimal point 2 places to the left and drop the % sign.