If you need 5th grade adding fractions 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 7/8 + 1/3 and 2/7 + 1/3, and the answers (29/24 and 13/21) 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.
Every step is visible on the page: rewrite, add, simplify. Children who try to do the rewriting in their heads make far more errors than those who write both new fractions down.
Checking is possible by estimation: each fraction is roughly a half, a bit more or a bit less, and the answer to 2/7 + 1/3 should be in the neighbourhood the estimate suggests.
The common denominator does not have to be the lowest one. Multiplying the two denominators always works, and with unlike denominators from 2 to 9 the extra simplification at the end is a small price for a method that never fails, which is why a line such as 5/9 + 6/8 turns up.
This is the topic where fraction work either clicks or collapses, and the deciding factor is usually whether equivalent fractions are secure.
In US classrooms these 5th grade adding fractions worksheets are commonly aligned with the fractions strand for grade 5, though the exact wording varies from state to state.
| # | Problem | Answer | What to check |
|---|---|---|---|
| 1 | 7/8 + 1/3 = | 29/24 | Watch for: stopping before simplifying |
| 2 | 2/7 + 1/3 = | 13/21 | Check: using the product when a much smaller common denominator exists |
| 3 | 1/8 + 4/6 = | 19/24 | Look at: multiplying only one fraction up |
| 4 | 1/7 + 1/5 = | 12/35 | Ask about: subtracting the larger numerator from the smaller after conversion |
| 5 | 5/9 + 6/8 = | 47/36 | Watch for: finding a common denominator but forgetting the numerators |
| 6 | 2/5 + 1/2 = | 9/10 | Check: adding numerators and denominators straight across |
A good first problem to do together is 7/8 + 1/3, which comes out at 29/24. Do 7/8 + 1/3 once with the child narrating, then hand over the pencil and start the clock on the other 20 problems.
The item 2/7 + 1/3 is worth doing slowly. The answer to 2/7 + 1/3 is 13/21, and the route to it is the route every other problem on this sheet takes — which is why the sheet has 20 of them rather than one.
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.
Answers appear next to their question numbers, so a wrong item like 2/7 + 1/3 can be found in the key in a second and re-worked while it is still fresh.
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.
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 7/8 + 1/3 from a neighbour.
Keep the finished 5th grade adding 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