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 +, - EnchantedLearning.comMath Dictionary x, ÷
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 Q is for ...
 quadrilateralA quadrilateral is a four-sided figure. The square, rectangle, rhombus, trapezoid, kite, and parallelogram are quadrilaterals. quartA quart is one-fourth of a gallon. Four quarts make one gallon. quarterA quarter is a coin that is worth 25 cents. Four quarters make one dollar. quartileA quartile for a data set is one of three data points that divide the set of data into four parts, each containing a quarter of the data. The first point marks the lower quartile boundary at the 25th percentile. The second marks the middle quartile (or midpoint of the data set), the median or the 50th percentile. The last marks the upper quartile (or 75th percentile) of a frequency distribution.
 quotientThe quotient is the answer in long division. The dividend divided by the divisor is the quotient (plus a remainder).

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