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7th math formulas

2011-2012 7th grade math formulas

QuestionAnswer
percent proportion is/of = %/100
percent of change proportion change/original = %/100
sales tax original price x tax % (has a decimal)= tax amt 2 total= original price + tax amt
tip original price x tip %(as a decimal)= tip amt2 total amt = original price + tip amt
discount
Created by: zhane
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