Every sheet of 2nd grade adding and subtracting 1 digit 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. The current sheet starts with problems like 41 + 6 and 55 − 7, and the answers (47 and 48) 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.
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 adding and subtracting one-digit numbers is what closes that specific gap.
Because the mix is randomised, the child cannot settle into a rhythm of 'all the pluses first'. That habit hides sign errors until test day, and a page containing both 41 + 6 and 55 − 7 makes it impossible.
The sheet uses a two-digit number plus a one-digit number, so switching operations is the only new difficulty on the page.
Mixing addition and subtraction on one page tests something the single-operation sheets cannot: whether the child reads the sign before starting. A page of 20 mixed problems typically produces two or three sign errors from a child who scored full marks on both operations separately.
Teachers usually place 2nd grade adding and subtracting 1 digit worksheets alongside the addition and subtraction fluency expectations for this grade, which is where the skill sits in the majority of US state frameworks.
| # | Problem | Answer | What to check |
|---|---|---|---|
| 1 | 41 + 6 = | 47 | Watch for: working the sheet out of order |
| 2 | 55 − 7 = | 48 | Check: skipping the check |
| 3 | 71 + 5 = | 76 | Look at: carrying the previous operation forward |
| 4 | 58 − 3 = | 55 | Ask about: slowing to a crawl at every sign change |
| 5 | 41 + 8 = | 49 | Watch for: misreading a minus as part of the first number |
| 6 | 49 − 5 = | 44 | Check: regrouping when it is not needed |
Try 71 + 5 together before letting the child start alone. The answer to 71 + 5 is 76, and talking through how it was reached takes about a minute and saves several minutes of guessing later in the sheet.
The item 55 − 7 is worth doing slowly. The answer to 55 − 7 is 48, 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.
The answer key is generated with the worksheet, not written by hand, so it always matches the sheet in front of you — 41 + 6 is listed as 47, 55 − 7 as 48, and so on down the page.
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.
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.
Keep the finished 2nd grade adding and subtracting 1 digit 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