Every sheet of 4th grade equivalent fractions worksheets on this page is built the moment you open it, so the 20 problems below are not the same ones the last visitor printed, and the answer key is generated with them. Right now the generator is set to problems such as 1/2 = 3/□ (answer 6) and 3/4 = □/24 (answer 18); press the button again and the numbers change while the skill stays the same.
‘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 3/4 = □/24: 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.
Simplifying a fraction means dividing the top and bottom by the same number until nothing else divides both. 1/2 = 3/□ reduces to 6, and the value never changed — only the way it is written.
The efficient route is to divide by the greatest common factor in one step. The safe route is to keep halving or dividing by three until you cannot. Both are on this sheet's answer key as the same final answer.
In US classrooms these 4th grade equivalent fractions worksheets are commonly aligned with the equivalent fractions expectations for this grade, though the exact wording varies from state to state.
| # | Problem | Answer | What to check |
|---|---|---|---|
| 1 | 1/2 = 3/□ | 6 | Watch for: losing the fraction line |
| 2 | 3/4 = □/24 | 18 | Check: dividing only the numerator |
| 3 | 5/8 = 15/□ | 24 | Look at: subtracting instead of dividing |
| 4 | 1/5 = □/15 | 3 | Ask about: stopping at the first common factor |
| 5 | 6/9 = 18/□ | 27 | Watch for: assuming every fraction simplifies |
| 6 | 1/2 = 6/□ | 12 | Check: cancelling digits rather than factors |
Take the first problem on the sheet as it stands, 1/2 = 3/□. Work 1/2 = 3/□ out on paper rather than in your head the first few times, say each step aloud, and check the result against 6 on the key before moving on.
A good first problem to do together is 1/2 = 3/□, which comes out at 6. Do 1/2 = 3/□ once with the child narrating, then hand over the pencil and start the clock on the other 20 problems.
Answers appear next to their question numbers, so a wrong item like 3/4 = □/24 can be found in the key in a second and re-worked while it is still fresh.
Because the numbers are random, there is no shared answer list to look up: the key printed behind your sheet is the only one that fits it, and it shows 6 for 1/2 = 3/□.
The sheet is laid out to fit one page on both US Letter and A4. Leave the browser scaling at 100% and turn headers and footers off, and the 20 problems land inside the margins on either paper size.
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.
Keep the finished 4th grade equivalent fractions worksheets in date order — the drop in time across ten sheets is the clearest progress report you will get.
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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