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Definition: A comparison of two numbers: Written As: Fraction, with :, and to Parts to whole: Or Parts to Parts: Examples: 8/35, 8:35, 8 to 35 Ratios Definition: A comparison of two numbers: Parts to whole: Or Parts to Parts: Definition: A comparison of two numbers: Written As: Fraction, with :, and to Parts to whole: Or Parts to Parts: Examples: 8/35, 8:35, 8 to 35 Ratios Equivalent Ratios = Equivalent Fractions You can multiply the top and bottom by the same # or reduce to get an Equivalent ratio Definition: A comparison of two numbers: Written As: Fraction, with :, and to Parts to whole: Or Parts to Parts: Examples: 8/35, 8:35, 8 to 35 Ratios Comparing Ratios You can use fraction rules to compare Or You can turn the ratios into decimals Finding Missing Part of Ratio: See how many times it takes to go from one fraction to the other. Do the same thing to the top or bottom. Equivalent Ratios = Equivalent Fractions You can multiply the top and bottom by the same # or reduce to get an Equivalent ratio Real World Uses • Population: Ethnicity, gender, etc. • Sports statistics: ERA, Batting Avg, Free • Throw Percent. • Probability: Odds of occurrances • Comparison Shopping: items per package