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7th math formulas
2011-2012 7th grade math formulas
Question | Answer |
---|---|
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 |