Kani Math
Cosmic Abacus
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2-digit subtraction worksheets

Column subtraction with borrowing, constrained so no difference ever goes negative — print, practice, mark from the key.

Borrowing is the first place subtraction gets genuinely hard, and the only fix is volume with feedback. These sheets keep the difficulty honest — operands span the full two-digit range, so borrows appear on some lines and not others.

The separate answer-key page means whoever marks the sheet is not redoing the arithmetic — and the student cannot peek mid-sheet.

Sheet #1000. The same settings and number always produce the same sheet, so you can reprint an identical paper — or press New sheet for fresh problems at the same difficulty.

Preview30 problems · 2 rows · 2 digits
  1. 1163−81
  2. 2160−72
  3. 353−11
  4. 448−37
  5. 5148−78
  6. 685−67
  7. 7136−86
  8. 864−60
  9. 962−30
  10. 10142−61
  11. 1168−33
  12. 12112−82
  13. 1340−25
  14. 14108−27
  15. 15156−86
  16. 16147−51
  17. 17139−46
  18. 1889−76
  19. 1991−41
  20. 2064−43

Questions

Do these include borrowing (regrouping)?
Yes, on the lines where the digits demand it. The mix of borrow and no-borrow problems is what shows whether the method is applied or memorized.
Can I make an easier version?
Drop the digits control to 1 for fact-level differences, or switch the operation to addition — the generator under this page does both.
Learn the techniqueBig friends (10-complements)Walk through it on the beads →

Open the full generator →

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