Grade 7 · Math

7th grade Percent of a number worksheet

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Percent of a number

Grade 7 Math Worksheet

NameDate

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

Kira's class raked 180 bags of leaves last fall. This fall the class raked 165% of that after one very windy week. How many bags did the class rake this fall?
Luz's sailing club sailed 120 miles in June. In July it sailed 145% of that, with a lot of wind. How many miles did the club sail in July?
Milo's class bakes 640 cookies for a school event. 12.5% of the cookies have chocolate chips, and those vanish first. How many cookies have chocolate chips?
Pia weighs 900 grams of trail mix, and 0.5% of it is salt. How many grams of salt are in the trail mix?
390 runners joined Tala's town race this year, which is 130% of last year's runners. How many runners joined last year?
3 of the seeds in Ari's garden never sprouted, which is 0.5% of all the seeds planted. How many seeds did Ari plant?
Last month Jun walked 50 miles. This month Jun walked 65 miles in new sneakers. This month's miles are what percent of last month's miles?
Pia's classroom supply box holds 360 crayons, and 9 of them are broken. What percent of the crayons are broken?
Read this first
Ratio table
Percent Amount
30 12
45 18
150 ?
The table shows the percent of last year's crowd at Tala's school play and the number of students that is. How many students are 150% of last year's crowd?
10.
Esme has 39 pages to read and has read 76% of them. Which is the best estimate of the pages Esme has read?
- 40
- 30
- 300

Percent	Amount
30	12
45	18
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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