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6.7.3 Ratios

Quiz Review

TermDefinition
equivalent Ratios ratios that have the same value can be found by scaling up, scaling down, drawing a table, tape diagram, or double number line
ratio a comparison of two quantities using division can be written 3 ways 3:2, 3 to 2 or 3/2 ORDER is important!
scaling up creating an equivalent ratio by multiplying the top and bottom of a fraction by the same number
scaling down creating an equivalent ratio by dividing the top and bottom of a fraction by the same number
finding equivalent fractions using a tape diagram Draw one box for each part of the ratio. Use the information given to determine how may go in each box.
finding equivalent fractions using a double number line Draw two number lines and use the numbers given in the ratio as the scale for each number line. Numbers that line up are equivalent ratios to the original ratio.
finding equivalent fractions in a table Draw a table and use the numbers given in the ratio as the scale for each row/column. Numbers that line up are equivalent ratios to the original ratio.
solve a proportion by using cross products and dividing by the coefficient.
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