Every sheet of 2nd grade math review 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. Two of the problems on the sheet as it stands are 53 + 15 and 54 − 15 — answers 68 and 39 — and a new set is one click away.
‘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.
Expect the score to drop when a child first moves from topic sheets to mixed sheets. That drop is information, not failure — it shows which skills were only situationally available.
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 53 + 15 and the next something completely different.
Because the mix regenerates, no two sessions test the same combination in the same order.
Marking a mixed sheet tells you where to go next: whichever skill produced the errors is the topic sheet to run tomorrow.
Work of this kind is commonly aligned with the grade-level fluency expectations across strands; schools outside the US meet the same skill at roughly the same age, which is why these 2nd grade math review worksheets travel well.
| # | Problem | Answer | What to check |
|---|---|---|---|
| 1 | 53 + 15 = | 68 | Watch for: reading the operation sign carelessly |
| 2 | 54 − 15 = | 39 | Check: skipping the hard ones and never returning |
| 3 | 9 × 9 = | 81 | Look at: applying the previous problem's method |
| 4 | 8 + 8 = | 16 | Ask about: slowing down at every switch |
| 5 | 48 + 12 = | 60 | Watch for: not marking by topic |
| 6 | 85 − 63 = | 22 | Check: panicking at an unfamiliar shape |
The item 54 − 15 is worth doing slowly. The answer to 54 − 15 is 39, 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.
Try 9 × 9 together before letting the child start alone. The answer to 9 × 9 is 81, and talking through how it was reached takes about a minute and saves several minutes of guessing later in the sheet.
Keys are produced by the same code that produces the questions, so a mismatch between question and answer is not possible on these sheets.
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 68 for 53 + 15.
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 53 + 15 from a neighbour.
Keep the finished 2nd grade math review worksheets in date order — the drop in time across ten sheets is the clearest progress report you will get.
→ Free 2nd 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