Kani Math
Cosmic Abacus
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Printable abacus worksheets

Generate a worksheet, print it, and practise away from a screen — with a matching answer key for whoever is marking.

  • 5 rows × 2 digits, add & subtract
  • About 15 min
  • Free, no account

Sample problems

Real problems from this drill, with answers. Nothing to install, no account, no email — work them on paper, on a physical abacus, or in your head.

  1. 1
    56
    + 66
    + 98
    − 85
    − 46
    ?
  2. 2
    45
    − 37
    + 18
    + 90
    + 88
    ?
  3. 3
    93
    + 66
    + 74
    + 10
    + 48
    ?
  4. 4
    11
    + 97
    + 67
    + 71
    + 39
    ?
  5. 5
    73
    + 91
    + 23
    − 63
    + 61
    ?
  6. 6
    83
    + 53
    − 84
    + 15
    − 34
    ?
  7. 7
    62
    + 61
    + 24
    − 68
    + 16
    ?
  8. 8
    31
    + 35
    + 55
    + 29
    − 94
    ?
  9. 9
    40
    + 71
    + 81
    + 87
    + 16
    ?
  10. 10
    85
    + 56
    − 80
    + 86
    − 52
    ?
  11. 11
    78
    + 12
    + 53
    + 35
    − 65
    ?
  12. 12
    51
    + 43
    + 26
    − 34
    + 25
    ?
Full answer key
  1. 56 + 66 + 98 − 85 − 46 = 89
  2. 45 − 37 + 18 + 90 + 88 = 204
  3. 93 + 66 + 74 + 10 + 48 = 291
  4. 11 + 97 + 67 + 71 + 39 = 285
  5. 73 + 91 + 23 − 63 + 61 = 185
  6. 83 + 53 − 84 + 15 − 34 = 33
  7. 62 + 61 + 24 − 68 + 16 = 95
  8. 31 + 35 + 55 + 29 − 94 = 56
  9. 40 + 71 + 81 + 87 + 16 = 295
  10. 85 + 56 − 80 + 86 − 52 = 95
  11. 78 + 12 + 53 + 35 − 65 = 113
  12. 51 + 43 + 26 − 34 + 25 = 111

This page is one drill. The app is the whole programme.

Kani Math is a full mental-arithmetic course, not a single exercise. Free to start, no signup, and it runs on the web, Android and iPhone.

  • ✓Nine levels, from the first bead to division
  • ✓Guided lessons that teach the technique, not just drills
  • ✓Flash, listening and abacus drills at a speed you set
  • ✓Versus matches against friends or the computer
  • ✓Say your answers out loud — the app listens and marks them
  • ✓Streaks, coins and badges, with parent and teacher views

Want to stay here? The demo further down runs right on this page.

Launch App →Try the demo ↓

Practise it now

The same drill, live in your browser, with a virtual soroban and instant marking.

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Loads a full interactive drill right here on the page. It never asks who you are.

No signup. Nothing saved unless you ask.

Explore the free virtual abacus →How to use an abacus →Mental Math Drill →

Build a printable worksheet

Twenty-five problems at this difficulty, laid out for A4. Print it as-is for the learner, or tick the answer box and print a second copy for marking.

Printable abacus worksheetsName ____________ Date ________ Score ____ / 25
  1. 177− 59+ 74+ 85+ 44
  2. 239+ 51+ 94+ 14+ 42
  3. 395+ 43+ 70+ 40− 90
  4. 465+ 29− 57+ 25+ 43
  5. 531+ 34+ 49+ 78+ 42
  6. 616+ 80− 50− 16+ 39
  7. 780− 27+ 11− 12+ 88
  8. 826− 24+ 68+ 18− 43
  9. 988− 19− 56+ 26+ 10
  10. 1021+ 72+ 80+ 62+ 20
  11. 1117+ 36+ 25− 12− 50
  12. 1263− 12− 27+ 84− 19
  13. 1334+ 13− 32+ 91+ 88
  14. 1441+ 46+ 44− 14− 42
  15. 1591+ 27+ 18+ 69− 93
  16. 1629+ 50− 47+ 23− 31
  17. 1796− 20+ 74+ 14+ 18
  18. 1829+ 68+ 31+ 18− 92
  19. 1979+ 38+ 46+ 41− 37
  20. 2061+ 53− 70+ 96+ 20
  21. 2110+ 25− 14+ 23− 10
  22. 2264+ 44− 18− 84+ 61
  23. 2369+ 57− 65+ 81− 38
  24. 2499− 52+ 33− 64+ 12
  25. 2516+ 20+ 19− 46+ 78

Try the full abacus worksheet generator →

About this drill

Screen practice and paper practice train slightly different things, and most learners need both. On paper there is no timer nudging the pace, no instant feedback, and no way to skip a hard problem — which makes it the better format for building patience and for the long, deliberate sessions that come before an examination.

Worksheets are also the practical answer for classrooms with limited devices, for homework that should not need a login, and for the twenty minutes in a car where a tablet is a bad idea. Every sheet here is generated from the same problem specification as the interactive drills, so paper work and screen work stay aligned.

How to practise it

  1. 1Choose digits, rows and operations to match the current level.
  2. 2Print the sheet without answers for the learner, with answers for whoever marks.
  3. 3Time the sheet as a whole rather than individual problems.
  4. 4Mark it immediately — feedback a day later teaches very little.

Questions

Are the worksheets really free?
Yes, and they need no account. Generate, print, use them in a classroom or at home, including for a paid class you teach.
Can I get an answer key?
Yes. The same sheet prints with or without answers, so the learner copy and the marking copy carry identical problems.
Will the same problems come back if I print twice?
Only if you keep the same settings and the same sheet number. Press New sheet for fresh problems at the same difficulty — useful for re-tests where memorisation would flatter the score.
Do these work without an abacus?
Yes. They are ordinary arithmetic worksheets; the abacus is the recommended method, not a requirement for the paper.
Learn the techniqueSmall friends (5-complements)Walk through it on the beads →