Grade 7 · Math

7th grade Percent of a number worksheet

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Percent of a number

Grade 7 Math Worksheet - Building Confidence

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Circle the best answer, or write your answer on the line.

Read this first
Ratio table
Percent Amount
100 80
25 20
150 ?
Ari's young tree is 80 centimeters tall. A year later it is 150% of that height, and it is clearly showing off. How many centimeters tall is the tree now?
Bo read 40 pages last week. This week Bo read 130% of that, because a cliffhanger showed up. How many pages did Bo read this week?
Kira plants 200 seeds in the class garden, and 1.5% of them never sprout (a few seeds are shy). How many seeds never sprout?
Milo's goal is to jog 60 minutes this week. Milo jogs 125% of that goal and calls it a victory lap. How many minutes does Milo jog?
Noah's lemonade stand planned to make 60 cups. After a very thirsty crowd, it made 175% of the plan. How many cups did it make?
Pia's class collected 90 cans last week. This week it collected 110% of that, and the bin is overflowing. How many cans did the class collect this week?
180 stars decorate Tala's class show this year, which is 120% of last year's stars. How many stars decorated the show last year?
Zee's bike trip this week was 60 miles, which is 125% of last week's trip. How many miles was last week's trip?
Bo's bean sprout was 20 millimeters tall on Monday and 50 millimeters tall on Friday. Friday's height is what percent of Monday's height?
Esme read for 30 minutes on Monday and 60 minutes on Tuesday, because a mystery got tense. Tuesday's reading time is what percent of Monday's?

Percent	Amount
100	80
25	20
150	?

7th grade Percent of a number worksheet – printable — Print: 1 2 3 4 5 6

About this worksheet

Percent of a number. Every version has 10 questions, and the answer key prints on the second page.

What your child will learn

I can find a percent of an amount when the percent is more than 100 (150% of 40) or less than 1 (0.5% of 900).
I can find the whole from a part and its percent, and the percent from a part and a whole, with the same kinds of percents.
I can do two steps in a row: a percent of a percent, "neither" groups, and a part found from another part. I can also give a quick estimate with a benchmark percent.

Standard: 7.RP.A.3

Words to know

percent: Out of 100. 150% means 150 out of every 100.

the 100 row: The table row for the whole, or the starting amount. It is always 100%.

over 100%: More than the whole. 150% of 40 is 60, bigger than 40.

1% row: The row where the percent is 1. Divide the whole by 100 to get it.

benchmark: An easy percent to work with: 10%, 25%, 50%, 75%.

estimate: A quick answer that is close, found by rounding first.

Common mistakes

Your child found only the part above 100% and stopped, instead of the whole amount.

Your child found a handy row of the table, such as 10% or 1%, and stopped there.

Your child moved the decimal point one place instead of two when changing a percent into a decimal (or a decimal into a percent).

What to say

Ask: if something grows to 150% of its size, is it bigger or smaller than before? Then add the whole back on.

Ask: is this row the percent the question asked about?

Ask: 1% is 1 out of 100, so what decimal is that?

Questions parents ask

What is the most common mistake with percent of a number?

Your child found only the part above 100% and stopped, instead of the whole amount.

How can I help my child with percent of a number?

Ask: if something grows to 150% of its size, is it bigger or smaller than before? Then add the whole back on.

Are these 7th grade math worksheets free to print?

Yes. All 6 printable versions at each level are free to print, with the answer key, and no account is needed.

More grade 7 math

See all grade 7 math

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