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Percent Proportion Equation

Solve practical problems using proportional reasoning

Percent: a number over 100Express the percent as a fraction and as a decimal.65 % 65 % Fraction 100 5520 13 = Fractions needs to be written in simplest form, if its possibleDecimal 6 5 % . Move the decimal point two places to the left, then remove the symbol 0

Percent: a number over 100Express the percent as a fraction and as a decimal.125 % 125 % Fraction 100 25254 5 = Fractions needs to be written in simplest form, if its possibleDecimal 1 2 5 % . Move the decimal point two places to the left, then remove the symbol

Percent: a number over 100Express the fraction as a percent.Fraction 20 3 Percent x5 x5 100 15 = 15 100 %

Percent: a number over 100Express the decimal as a percent.0.125 Decimal Percent 1 2 5 % . Move the decimal point two places to the right, then add the % symbol0

Percent: a number over 100Express the decimal as a percent.3.12 Decimal Percent 1 2 % . Move the decimal point two places to the right, then add the % symbol3

In a percent proportion equation, the numerator called the is , is being compared to the whole quantity called of . The other ratio is the percent written as a number, whose base is 100Percent proportion

is over of equals percent over 100.Many word problems can be solved using the formula Percent proportionThe value of the is & of come from the problemThe number here is already a percent, just replace with the numberThe 100 stays the same in all problems

Percent proportion4 is 50% of 8isof%100=485010 is 20% of 50isof%100=105020

Percent proportionWhat number is 5% of 40?isof%100=x405100=x405Use cross product to solve the proportionSolve the equation by doing the opposite100 x = 200100 100x = 25% of 40 is 2Write a sentence as an answer

Percent proportion72 is 6% of what number?isof%100=72x6100=72x6Use cross product to solve the proportionSolve the equation by doing the opposite 6 x = 7200 6 6x = 1,20072 is 6% of 1,200Write a sentence as an answer

Percent proportion8 is what percent of 40?isof%100=840x100=840xUse cross product to solve the proportionSolve the equation by doing the opposite 40 x = 800 40 40x = 208 is 20% of 40Write a sentence as an answer

Practice Percent proportion50 is 20% of what numberisof%100=50x20What number is 45% of 180isof%100=x18045 20 x = 5000 20 20x = 250100 x = 8100100 100x = 81

Practice Percent proportionWhat percent of 90 is 36?isof%100=3690xWhat percent of 185 is 35isof%100=35185x 90 x = 3600 90 90x = 40185 x = 3500185 185x = 18.9

Percent proportionMateo answer 20 question out of 25 in his Math test. What percent of the test does he answer correctly?isof%100=2025x100=2025xUse cross product to solve the proportionSolve the equation by doing the opposite 25 x = 2000 25 25x = 80He answered 80% of the test correctly.Write a sentence as an answer

Percent proportionThere are 300 students in 7th grade, 30% are in Mr. Montoyas class. How many students are in his class?isof%100=x30030100=x30030Use cross product to solve the proportionSolve the equation by doing the opposite100 x = 9000 100 100x = 90He has 90 students in his class.Write a sentence as an answer

Percent proportionA serving of ice cream contains 240 calories. 144 calories comes from fat. What percent of the total calories comes from fat ?isof%100=144240x100=144240xUse cross product to solve the proportionSolve the equation by doing the opposite 240 x = 14400 240 240x = 6060% of the calories comes from fat.Write a sentence as an answer

Percent proportionMrs. Finnegan has a large container of olive oil. She has used 2 quarts of oil, seventy-five percent of the olive oil remains. How many quarts of oil remains ?isof%100=2x25100=2x25Use cross product to solve the proportionSolve the equation by doing the opposite 25 x = 200 25 25x = 8She has 8 more quarts of olive oil.Write a sentence as an answer

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