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Unit 3

Math Vocabulary

equivalent fractions fractions that name the same amount or part
multiplicative inverse the product of a nonzero number and its reciprocal or multiplicative inverse
percent of change the amount stated as a percent that a number increases or decreases
proportion an equation that shows two ratios are equivalent
ratio a comparison of two quantities by division
unit rate a rate in which the second quantity in the comparison is one unit
scale factor the ratio used to enlarge or reduce similar figures
constant of proportionality the constant value of a ratio of two proportional quantities x and y
indirect measurement the technique of using similar figures and proportions to find a measure
principal the initial amount of money borrowed or saved
simple interest a fixed percent of the principal It is found using the formula I=Prt, where p represents the principal, r the rate of interest, and t the time.
Created by: dmac0203