This page makes free printable 4th grade math review worksheets on demand: press the button and you get a new sheet of 20 problems with a matching answer key, ready for US Letter or A4 paper. You will see items like 75 × 57 and 48 ÷ 5 on the printed page, with 4,275 and 9 R 3 waiting on the answer key so nobody has to redo the arithmetic.
‘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.
Marking a mixed sheet tells you where to go next: whichever skill produced the errors is the topic sheet to run tomorrow.
A mixed sheet is a different test from a topic sheet. It asks whether the child can recognise which skill applies before applying it, which is exactly what a real assessment does. The first problem might be 75 × 57 and the next something completely different.
Mixed practice is measurably harder and measurably more durable. Blocked practice on one skill produces faster progress in a session and less retention a month later.
The problems here are drawn from across the grade's core skills, using two two-digit numbers.
In US classrooms these 4th grade math review worksheets are commonly aligned with the grade-level fluency expectations across strands, though the exact wording varies from state to state.
| # | Problem | Answer | What to check |
|---|---|---|---|
| 1 | 75 × 57 = | 4,275 | Watch for: applying the previous problem's method |
| 2 | 48 ÷ 5 = | 9 R 3 | Check: panicking at an unfamiliar shape |
| 3 | 2,767 + 6,514 = | 9,281 | Look at: not marking by topic |
| 4 | 2,371 − 1,272 = | 1,099 | Ask about: skipping the hard ones and never returning |
| 5 | 26 × 17 = | 442 | Watch for: slowing down at every switch |
| 6 | 56 ÷ 9 = | 6 R 2 | Check: reading the operation sign carelessly |
Here is one worked through. 48 ÷ 5 gives 9 R 3. If your child arrives somewhere other than 9 R 3 on 48 ÷ 5, look at the working rather than the answer: nearly every wrong result comes from a skipped step, not an unknown fact.
Work 2,371 − 1,272 out loud as a demonstration. It gives 1,099. Children who hear 2,371 − 1,272 reasoned through once at the start of a session make noticeably fewer errors in the ten minutes that follow.
Keys are produced by the same code that produces the questions, so a mismatch between question and answer is not possible on these sheets.
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.
To save these 4th grade math review worksheets instead of printing them, choose 'Save as PDF' in the printer list. You get the worksheet and the answer key as a single PDF, on Letter or A4 depending on your printer settings.
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.
When these become easy, move along the related links below rather than adding more problems to the same sheet.
→ Free 4th Grade Math Worksheets · → Free Mixed Review 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