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Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 363 · 40 questions
TalentJR

The fast method (Shift both): How much makes the second number round? 68 needs 2 to make 70. Add that amount to BOTH numbers. Take away the round number.

NameDateTime takenScore ___ / 40
  1. 1.104 − 27 =
  2. 2.498 − 58 =
  3. 3.382 − 19 =
  4. 4.190 − 66 =
  5. 5.183 − 19 =
  6. 6.288 − 88 =
  7. 7.400 − 89 =
  8. 8.236 − 36 =
  9. 9.329 − 96 =
  10. 10.304 − 26 =
  11. 11.436 − 76 =
  12. 12.148 − 96 =
  13. 13.474 − 88 =
  14. 14.182 − 78 =
  15. 15.255 − 17 =
  16. 16.205 − 66 =
  17. 17.554 − 67 =
  18. 18.152 − 86 =
  19. 19.168 − 17 =
  20. 20.339 − 79 =
  21. 21.526 − 97 =
  22. 22.127 − 77 =
  23. 23.483 − 46 =
  24. 24.525 − 88 =
  25. 25.324 − 49 =
  26. 26.93 − 69 =
  27. 27.159 − 96 =
  28. 28.148 − 89 =
  29. 29.324 − 87 =
  30. 30.109 − 36 =
  31. 31.323 − 26 =
  32. 32.158 − 36 =
  33. 33.552 − 77 =
  34. 34.520 − 69 =
  35. 35.560 − 99 =
  36. 36.265 − 96 =
  37. 37.259 − 38 =
  38. 38.138 − 19 =
  39. 39.157 − 88 =
  40. 40.328 − 48 =

Answer key

  1. 77
  2. 440
  3. 363
  4. 124
  5. 164
  6. 200
  7. 311
  8. 200
  9. 233
  10. 278
  11. 360
  12. 52
  13. 386
  14. 104
  15. 238
  16. 139
  17. 487
  18. 66
  19. 151
  20. 260
  21. 429
  22. 50
  23. 437
  24. 437
  25. 275
  26. 24
  27. 63
  28. 59
  29. 237
  30. 73
  31. 297
  32. 122
  33. 475
  34. 451
  35. 461
  36. 169
  37. 221
  38. 119
  39. 69
  40. 280

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