If you need 2 digit plus 1 digit addition 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 version loaded below opens with items in the shape of 89 + 5 and 27 + 8; the key lists 94 and 35 next to their question numbers.
‘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.
Because the addends are regenerated every time, a child cannot learn the sheet instead of the skill. Yesterday's page may have asked for 56 + 6; today's asks something else in the same shape.
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 35.
Addition is the first place a child meets the idea of a carried digit, and it is the skill every later algorithm leans on. A sheet like 89 + 5 looks small, but the habit it builds — line up the places, work right to left, record the carry — is the same habit that survives into multi-digit multiplication.
The problems here use a two-digit number plus a one-digit number, which keeps the arithmetic honest without turning the page into a copying exercise. 89 + 5 and 27 + 8 are typical of the range.
In US classrooms these 2 digit plus 1 digit addition 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 | 89 + 5 = | 94 | Watch for: treating a longer number as a bigger one |
| 2 | 27 + 8 = | 35 | Check: losing the place columns |
| 3 | 56 + 6 = | 62 | Look at: adding right to left, then reading left to right |
| 4 | 32 + 3 = | 35 | Ask about: counting on from the wrong number |
| 5 | 87 + 4 = | 91 | Watch for: forgetting the carried digit |
| 6 | 57 + 3 = | 60 | Check: guessing on the near-tens |
The item 27 + 8 is worth doing slowly. The answer to 27 + 8 is 35, 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.
Take the first problem on the sheet as it stands, 89 + 5. Work 89 + 5 out on paper rather than in your head the first few times, say each step aloud, and check the result against 94 on the key before moving on.
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 94 for 89 + 5.
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.
Portrait orientation is what the sheet is designed for. Landscape works but wastes about a third of the paper, so leave the orientation alone unless you have a reason.
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.
Print a sheet of 2 digit plus 1 digit addition worksheets, run it for 10 minutes, mark it together, and come back tomorrow for a different set of numbers on the same skill.
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