If you need 1st grade addition and subtraction 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 9 + 3 and 2 − 1, and the answers (12 and 1) 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.
The sheet uses single digits, 1 through 9, so switching operations is the only new difficulty on the page.
Watch the pace across the page rather than the total time. Children who slow down noticeably at each change of sign are still translating rather than recalling.
This is the sheet to use when accuracy on each operation alone is already good but classwork still comes back with careless marks. Mixed practice on addition and subtraction is what closes that specific gap.
The two operations are inverses, and putting them side by side is what makes that concrete. After finding 12 for 9 + 3, the same numbers rearranged should be recognisable in the opposite direction.
These 1st grade addition and subtraction worksheets are commonly aligned with the addition and subtraction fluency expectations for this grade, and the skill appears in most curricula somewhere around this point.
| # | Problem | Answer | What to check |
|---|---|---|---|
| 1 | 9 + 3 = | 12 | Watch for: carrying the previous operation forward |
| 2 | 2 − 1 = | 1 | Check: misreading a minus as part of the first number |
| 3 | 5 + 6 = | 11 | Look at: skipping the check |
| 4 | 7 − 4 = | 3 | Ask about: working the sheet out of order |
| 5 | 2 + 1 = | 3 | Watch for: slowing to a crawl at every sign change |
| 6 | 4 − 3 = | 1 | Check: regrouping when it is not needed |
Try 5 + 6 together before letting the child start alone. The answer to 5 + 6 is 11, and talking through how it was reached takes about a minute and saves several minutes of guessing later in the sheet.
The item 2 − 1 is worth doing slowly. The answer to 2 − 1 is 1, 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.
Keys are produced by the same code that produces the questions, so a mismatch between question and answer is not possible on these sheets.
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 9 + 3 from a neighbour.
To save these 1st grade addition and subtraction 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.
Keep the finished 1st grade addition and subtraction 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