Percent of a quantity. Game on.

Percent of a quantity is a grade 6 math skill aligned to Common Core standard 6.RP.A.3.C: find a percent of a quantity as a rate per 100; solve problems involving finding the whole, given a part and the percent. Below are 8 practice questions with answers and step-by-step explanations, drawn from the 10 percent of a quantity problems our math games drill.

CCSS 6.RP.A.3.C10 questions in the bank
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Warm-upeasy

A parking lot has 320320 spaces. During lunch, cars fill 40%40\% of the spaces. How many spaces are filled during lunch?

Convert 40%40\% to a decimal and multiply: 0.40×320=1280.40 \times 320 = 128 spaces.

Mid-gameeasy

There are 250250 students in sixth grade. On Friday, 20%20\% of the students went on a field trip. How many students went on the field trip?

Convert 20%20\% to a decimal and multiply: 0.20×250=500.20 \times 250 = 50 students.

Mid-gameeasy

A park has 900900 newly planted trees. Gardeners water 10%10\% of the trees each morning. How many trees are watered each morning?

Convert 10%10\% to a decimal and multiply: 0.10×900=900.10 \times 900 = 90 trees.

Mid-gameeasy

A warehouse stores 160160 boxes of supplies. Workers ship 35%35\% of the boxes before noon. How many boxes are shipped before noon?

Convert 35%35\% to a decimal and multiply: 0.35×160=560.35 \times 160 = 56 boxes.

Mid-gameeasy

A novel has 1,2001{,}200 pages. Maya has read 15%15\% of the pages. How many pages has Maya read?

Convert 15%15\% to a decimal and multiply: 0.15×1,200=1800.15 \times 1{,}200 = 180 pages.

Mid-gameeasy

A community center expects 8080 volunteers for a cleanup day. By 88 a.m., 60%60\% of the volunteers have signed in. How many volunteers have signed in by 88 a.m.?

Convert 60%60\% to a decimal and multiply: 0.60×80=480.60 \times 80 = 48 volunteers.

Mid-gameeasy

A kitchen prepares 500500 jars of jam. Workers label 8%8\% of the jars before the first break. How many jars are labeled before the first break?

Convert 8%8\% to a decimal and multiply: 0.08×500=400.08 \times 500 = 40 jars.

Buzzer beatereasy

A banquet hall sets out 360360 chairs. Guests have reserved 45%45\% of the chairs. How many chairs have been reserved?

Convert 45%45\% to a decimal and multiply: 0.45×360=1620.45 \times 360 = 162 chairs.

Overtime

2 more. Played, not assigned.

The rest of the bank lives inside live head-to-head matches — the placement test finds the right starting difficulty.

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Tests that cover percent of a quantity:
PSAT 8/9SBACACTNC EOG/EOCVTCAP
More Grade 6 skills
Mean from a data listMultiplying and dividing fractionsOrder of operationsDecimal operationsExponents notationFraction-decimal-percent conversionMean change from data set editsMeasures of center and variabilityAll Grade 6 practice →

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