Do percentages need to be converted to decimals?

For written calculation it is usually easiest, yes. For mental work the benchmark method is faster and less error-prone.

Will these print correctly on A4?

Yes. These percent worksheets fit both A4 and US Letter without clipping, as long as print scaling is left at 100% and browser headers and footers are switched off.

Can I change how many problems are on the page?

Yes — the generator takes 10, 20 or 30 problems. Twenty is the default because it fits one page and suits a 10-minute drill.

Why do percentages come up so much later in school?

Because they carry ratio, proportion and scaling all at once. Fluency here makes a large slice of later mathematics much less painful.

Worksheets › benchmark percentages

Percent Worksheets

If you need percent worksheets that you can print right now, this page builds them for you — 20 fresh problems, an answer key underneath, and no account to create first. The current sheet starts with problems like 75% of 40 and 50% of 50, and the answers (30 and 25) are printed on the key so marking takes about a minute.

📄 PERCENT WORKSHEETS — A NEW SHEET EVERY TIME YOU PRESS THE BUTTON

🎲 New set of problems

‘New set of problems’ opens the generator in its own tab. There you can change the problem count and turn the answer key on or off. ‘Print or save as PDF’ opens the print dialog — choose Save as PDF in the printer list to keep the file. The sheet fits US Letter and A4, and the answer key prints on its own page.

What these worksheets cover

Because the numbers regenerate, the child practises the method rather than recognising familiar percentages.

A percentage is a fraction with a denominator of one hundred, and every percentage problem is a fraction problem underneath. Finding 75% of 40 means taking that many hundredths of the number, which gives 30.

This sheet uses whole numbers up to 100 with the common percentages, chosen so that the arithmetic can be done mentally by a child who knows the benchmark percentages, which is why a line such as 75% of 70 turns up.

The three quantities in any percentage question are the part, the whole and the rate, and every question gives two of them. Identifying which two is most of the work.

These percent worksheets are commonly aligned with the ratio and proportional relationships strand for grade 6, and the skill appears in most curricula somewhere around this point.

Six problems from the sheet in front of you

These six come from the sheet loaded on this page. Press the button and the numbers change, but the shape stays the same (whole numbers up to 100 with the common percentages).
#	Problem	Answer	What to check
1	75% of 40 =	30	Watch for: treating the percentage as a plain number
2	50% of 50 =	25	Check: rounding money percentages badly
3	25% of 70 =	17.5	Look at: adding percentages of different wholes
4	1/4 as a percent =	25%	Ask about: confusing a percentage increase with the resulting value
5	75% of 70 =	52.5	Watch for: finding the percentage of the wrong quantity
6	6/10 as a percent =	60%	Check: moving the decimal point the wrong way

Start with one worked example

Work 1/4 as a percent out loud as a demonstration. It gives 25%. Children who hear 1/4 as a percent reasoned through once at the start of a session make noticeably fewer errors in the ten minutes that follow.

Here is one worked through. 50% of 50 gives 25. If your child arrives somewhere other than 25 on 50% of 50, look at the working rather than the answer: nearly every wrong result comes from a skipped step, not an unknown fact.

Three common mistakes and what to do about them

Rounding money percentages badly
A percentage of a money amount often produces more than two decimal places, and the rounding convention has to be decided before an answer to 25% of 70 is written down.
Adding percentages of different wholes
Ten per cent of one number plus ten per cent of another is not ten per cent of anything simple. This is the source of most percentage confusion in real contexts.
Treating the percentage as a plain number
Twenty per cent of something is not twenty. The percentage sign has to be converted to a hundredth before any arithmetic, or the answer misses 30 entirely.

How to use these worksheets at home

Re-print the same skill rather than the same sheet. Because the numbers change, a child who memorised that 75% of 40 gives 30 still has to actually calculate tomorrow.
Write the finish time and the score at the top of every sheet. Two weeks of those two numbers tells you more about progress on benchmark percentages than any single test result.
If two days in a row come out under 10 minutes with everything correct, that is the signal to move up: either numbers bigger than 75% of 40 uses, or the next skill in the sequence.
Run the sheet at the same time each day. Ten focused minutes before dinner beats an hour on Sunday, because benchmark percentages is a recall skill: 75% of 40 has to arrive without being worked out, and recall is built by frequency.
Do not raise the number of problems until the accuracy is steady. Going from 20 correct-but-slow problems to more problems only multiplies the same mistake.

The answer key

Every generated sheet carries its own key on a separate printed page, which lets a child self-mark without seeing the answers while they work.

The key prints on its own page by default. Uncheck the answer-key box before printing if you would rather keep it back and mark the sheet yourself.

How to print this worksheet

If the problems look cramped, drop the count from 20 to a smaller number before printing these percent worksheets; the font stays the same size and the spacing opens up.

For a class set, print one sheet, press the new-worksheet button and print again. Each child gets different numbers on the same skill, so nobody can copy the answer to 75% of 40 from a neighbour.

Frequently asked questions

Do percentages need to be converted to decimals?: For written calculation it is usually easiest, yes. For mental work the benchmark method is faster and less error-prone.
Will these print correctly on A4?: Yes. These percent worksheets fit both A4 and US Letter without clipping, as long as print scaling is left at 100% and browser headers and footers are switched off.
Can I change how many problems are on the page?: Yes — the generator takes 10, 20 or 30 problems. Twenty is the default because it fits one page and suits a 10-minute drill.
Why do percentages come up so much later in school?: Because they carry ratio, proportion and scaling all at once. Fluency here makes a large slice of later mathematics much less painful.

When these become easy, move along the related links below rather than adding more problems to the same sheet.

More worksheets like this

→ Free Percent Worksheets

Free printable math worksheets from a working math academy director in Korea. Problems come from our own code, not from a published workbook. Every sheet prints on US Letter or A4 with its answer key. All worksheets · Worksheet generator · Korean site
Last updated: 2026-09-13