Use this page when you want 2nd grade addition with regrouping worksheets in the next thirty seconds: choose how many problems you want, press print, and the answer key comes out on its own page behind the worksheet. Right now the generator is set to problems such as 45 + 56 (answer 101) and 39 + 46 (answer 85); 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.
The problems here use two-digit numbers that always carry in the ones, which keeps the arithmetic honest without turning the page into a copying exercise. 45 + 56 and 39 + 46 are typical of the range.
What separates a confident adder from a slow one is rarely the method; it is whether the number bonds underneath are automatic. Watch how long the child hesitates before writing the first digit of 85.
Fluency in addition is usually described in two parts: knowing the single-digit facts by recall, and applying a written method to bigger numbers. This sheet exercises whichever of the two the number range implies — for 45 + 56 the answer 101 should come from memory, not from counting.
Because the addends are regenerated every time, a child cannot learn the sheet instead of the skill. Yesterday's page may have asked for 87 + 19; today's asks something else in the same shape.
In US classrooms these 2nd grade addition with regrouping worksheets are commonly aligned with the addition strand of most US state standards for this grade, though the exact wording varies from state to state.
| # | Problem | Answer | What to check |
|---|---|---|---|
| 1 | 45 + 56 = | 101 | Watch for: losing the place columns |
| 2 | 39 + 46 = | 85 | Check: treating a longer number as a bigger one |
| 3 | 87 + 19 = | 106 | Look at: guessing on the near-tens |
| 4 | 43 + 19 = | 62 | Ask about: adding right to left, then reading left to right |
| 5 | 68 + 33 = | 101 | Watch for: counting on from the wrong number |
| 6 | 76 + 16 = | 92 | Check: forgetting the carried digit |
Work 43 + 19 out loud as a demonstration. It gives 62. Children who hear 43 + 19 reasoned through once at the start of a session make noticeably fewer errors in the ten minutes that follow.
Take the first problem on the sheet as it stands, 45 + 56. Work 45 + 56 out on paper rather than in your head the first few times, say each step aloud, and check the result against 101 on the key before moving on.
Answers appear next to their question numbers, so a wrong item like 39 + 46 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 101 for 45 + 56.
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.
To save these 2nd grade addition with regrouping 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.
When these become easy, move along the related links below rather than adding more problems to the same sheet.
→ Free 2nd Grade Math Worksheets · → Free Addition 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