Percentage reasoning · grades 5–7

Percent of a Number Worksheet Generator

Build fresh practice for questions such as 25% of 80 or 12.5% of 64. Values are constructed backward from exact integer relationships, so the key never depends on an unstated rounding rule.

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Percent of a Number Practice

Percent of a number · Multiples of 5% · Seed 261301

45% of 680 = ____

50% of 190 = ____

5% of 660 = ____

35% of 680 = ____

85% of 520 = ____

70% of 640 = ____

20% of 495 = ____

80% of 575 = ____

50% of 494 = ____

10.

75% of 688 = ____

11.

5% of 640 = ____

12.

45% of 580 = ____

13.

80% of 55 = ____

14.

70% of 190 = ____

15.

75% of 96 = ____

16.

55% of 40 = ____

17.

55% of 420 = ____

18.

45% of 260 = ____

Exact-construction rule: number problems are built from a known rate and compatible whole, while money problems use integer-cent arithmetic. That keeps the intended answer exact instead of hiding a rounding decision in the key.

Finding a percent of a quantity from benchmarks

Most percent problems can be solved without a calculator once a few benchmark rates are known. Because the generator builds every problem backward from an exact whole-number relationship, the part is always an integer or an exact half, and the method a student chooses can be checked against the key.

Progressing through the percent sets

Begin with 10%, 25%, 50% and 75%, then multiples of 5%, and only then the full whole-percent range. A student who can say 35% is 25% plus 10% has understood the structure, so have them write down which benchmark they used.

Three ways to reach the same answer

35% of 80: take 25% (20) and 10% (8) to get 28, which agrees with 0.35 × 80.
12.5% of 64 is one eighth of 64, which is 8.
150% of 40 is one whole (40) plus a half (20), which is 60.

Frequent percent errors

Converting 5% to 0.5 instead of 0.05, which makes the answer ten times too large.
Thinking a percent can never exceed 100, so 150% of a number is rejected as impossible.
Finding the percent of the wrong quantity when a word problem mentions two amounts.

Teaching note 1

Start with benchmark rates such as 10%, 25%, 50%, and 75% when students are still connecting percents to familiar fractions.

Teaching note 2

Move to multiples of 5% before using the full whole-percent set. This adds variety without changing the underlying part-whole structure all at once.

Teaching note 3

Extended mode includes exact half-percent benchmarks such as 12.5% and percentages above 100%, which is useful only after the basic multiplicative relationship is secure.

Teaching note 4

Model the benchmark method explicitly: 35% of 80 is 25% (20) plus 10% (8), which equals 28, and it should match 0.35 x 80.

Teaching note 5

Watch for students who read '15% of 60' and compute 15 x 60 or 60 divided by 15. 'Of' means multiply, but the percent must first become 0.15 or 15/100.

More percentage practice

Switch the missing quantity

Open percentage hub →

Finding the percent →Finding the whole →Percent change →Discount, tax & tip →

Frequently asked questions

Are the answers exact?

Yes. The generator chooses a whole that is compatible with the selected percentage so each answer is exact instead of silently rounded.

Which standard does this practice?

CCSS 6.RP.A.3c: find a percent of a quantity as a rate per 100. It is also revisited inside 7.RP.A.3 multistep percent problems.

Should students use a fraction or a decimal for the percent?

Either. Benchmark rates such as 25% or 10% are fastest as fractions for mental math; non-benchmark rates such as 37% are easier as the decimal 0.37.

Can I practice percentages above 100%?

Yes. Extended mode includes selected values above 100%, and a custom whole-percent range can go up to 200%.

Can I choose my own percent range?

Yes. Choose Custom whole % range and set a minimum and maximum whole-number percentage.

Does the worksheet include an answer key?

Yes. The direct PDF can append a separate teacher answer-key page.