This page makes free printable 3rd grade 3 digit subtraction with regrouping worksheets on demand: press the button and you get a new sheet of 20 problems with a matching answer key, ready for US Letter or A4 paper. The current sheet starts with problems like 277 − 108 and 876 − 737, and the answers (169 and 139) 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.
Subtraction is where arithmetic confidence is usually won or lost. The written method itself is short, but it demands that the child hold a borrowed ten in their head while working on the next column — which is why 277 − 108 can take three times as long as an addition of the same size.
This sheet uses three-digit numbers that borrow. That is deliberate: wide enough to force real regrouping, narrow enough that a child can still check the answer by adding back.
Every subtraction has an addition hiding inside it, and checking 876 − 737 by adding 139 back to the smaller number is the single most useful habit you can teach on this page.
There are two ways to think about a subtraction such as 277 − 108: taking away, or finding the difference. Children who only know the first find 169 slowly whenever the two numbers are close together.
Teachers usually place 3rd grade 3 digit subtraction with regrouping worksheets alongside the subtraction strand of most US state standards for this grade, which is where the skill sits in the majority of US state frameworks.
| # | Problem | Answer | What to check |
|---|---|---|---|
| 1 | 277 − 108 = | 169 | Watch for: counting back one at a time |
| 2 | 876 − 737 = | 139 | Check: checking by re-subtracting |
| 3 | 787 − 528 = | 259 | Look at: borrowing across a zero |
| 4 | 624 − 319 = | 305 | Ask about: forgetting to reduce the column that was borrowed from |
| 5 | 486 − 137 = | 349 | Watch for: reading the minus sign as a plus |
| 6 | 347 − 208 = | 139 | Check: subtracting the smaller digit from the larger one |
Work 624 − 319 out loud as a demonstration. It gives 305. Children who hear 624 − 319 reasoned through once at the start of a session make noticeably fewer errors in the ten minutes that follow.
Here is one worked through. 876 − 737 gives 139. If your child arrives somewhere other than 139 on 876 − 737, look at the working rather than the answer: nearly every wrong result comes from a skipped step, not an unknown fact.
Every generated sheet carries its own key on a separate printed page, which lets a child self-mark without seeing the answers while they work.
Keys are produced by the same code that produces the questions, so a mismatch between question and answer is not possible on these sheets.
If the problems look cramped, drop the count from 20 to a smaller number before printing these 3rd grade 3 digit subtraction with regrouping worksheets; the font stays the same size and the spacing opens up.
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.
One sheet of 3rd grade 3 digit subtraction with regrouping worksheets a day for two weeks will tell you more about where a 3rd grader actually stands than any single long assessment.
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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