The worksheet generator on this page produces simplifying fractions worksheets with real, freshly randomised numbers — 20 of them per sheet by default — plus the answer key a parent or teacher needs to mark it quickly. The current sheet starts with problems like Simplify 45/60 and Simplify 35/40, and the answers (3/4 and 7/8) are printed on the key so marking takes about a minute.
‘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.
A quick divisibility check saves time on a fraction like Simplify 35/40: even numbers halve, digit sums divisible by three divide by three, numbers ending in 0 or 5 divide by five.
Because each sheet is generated, the child meets a different set of common factors every session rather than getting good at halving alone.
Equivalent fractions and simplifying are the same idea travelling in opposite directions, and children who see that handle common denominators far more easily.
Simplifying a fraction means dividing the top and bottom by the same number until nothing else divides both. Simplify 45/60 reduces to 3/4, and the value never changed — only the way it is written.
Teachers usually place simplifying fractions worksheets alongside the equivalent fractions expectations for this grade, which is where the skill sits in the majority of US state frameworks.
| # | Problem | Answer | What to check |
|---|---|---|---|
| 1 | Simplify 45/60 = | 3/4 | Watch for: assuming every fraction simplifies |
| 2 | Simplify 35/40 = | 7/8 | Check: cancelling digits rather than factors |
| 3 | Simplify 2/8 = | 1/4 | Look at: losing the fraction line |
| 4 | Simplify 8/48 = | 1/6 | Ask about: stopping at the first common factor |
| 5 | Simplify 8/10 = | 4/5 | Watch for: subtracting instead of dividing |
| 6 | Simplify 16/48 = | 1/3 | Check: dividing only the numerator |
Take the first problem on the sheet as it stands, Simplify 45/60. Work Simplify 45/60 out on paper rather than in your head the first few times, say each step aloud, and check the result against 3/4 on the key before moving on.
Work Simplify 8/48 out loud as a demonstration. It gives 1/6. Children who hear Simplify 8/48 reasoned through once at the start of a session make noticeably fewer errors in the ten minutes that follow.
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.
Answers appear next to their question numbers, so a wrong item like Simplify 35/40 can be found in the key in a second and re-worked while it is still fresh.
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 Simplify 45/60 from a neighbour.
Printing works the same on US Letter and A4, because the layout uses relative widths rather than fixed inches. Set margins to default and scaling to 100%, and all 20 problems fit.
Print a sheet of simplifying fractions worksheets, run it for 10 minutes, mark it together, and come back tomorrow for a different set of numbers on the same skill.
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