Matching Pairs Percent ReviewOnline version vocabulary and formulas for test review by STEPHANIE GREGORY 1 To find the total after tax or gratuity 2 Principal 3 To change a percent to a decimal 4 how to find percent error 5 how to find the percent of a number 6 simple interest formula 7 interest 8 how to find percent increase or percent decrease 9 To change a decimal to a percent 10 interest rate 11 To find the total after a disccount Move the decimal 2 times to the right Move the decimal two times to the left is/of = %/100 the amount of money being charged to borrow money or the amount of money earned for investing money difference/original = %/100 I = PRT difference/actual = %/100 the amount of money being invested or the amount of money being borrowed Multiply the cost by the percent as a decimal, the subtract that amount from the cost Multiply the cost by the percent as a decimal, then add it back to cost the % being charged for a loan or the % being earned for investing
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