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Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 482 · 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. 1.209 − 47 =
  2. 2.162 − 39 =
  3. 3.116 − 67 =
  4. 4.130 − 78 =
  5. 5.159 − 76 =
  6. 6.525 − 37 =
  7. 7.259 − 97 =
  8. 8.580 − 76 =
  9. 9.395 − 77 =
  10. 10.400 − 26 =
  11. 11.599 − 27 =
  12. 12.130 − 88 =
  13. 13.194 − 58 =
  14. 14.372 − 47 =
  15. 15.264 − 17 =
  16. 16.403 − 88 =
  17. 17.144 − 27 =
  18. 18.531 − 59 =
  19. 19.190 − 37 =
  20. 20.447 − 68 =
  21. 21.413 − 79 =
  22. 22.381 − 79 =
  23. 23.116 − 16 =
  24. 24.166 − 58 =
  25. 25.155 − 98 =
  26. 26.132 − 16 =
  27. 27.269 − 86 =
  28. 28.208 − 36 =
  29. 29.583 − 89 =
  30. 30.368 − 48 =
  31. 31.144 − 79 =
  32. 32.585 − 68 =
  33. 33.109 − 48 =
  34. 34.298 − 36 =
  35. 35.325 − 46 =
  36. 36.593 − 36 =
  37. 37.379 − 89 =
  38. 38.218 − 38 =
  39. 39.121 − 28 =
  40. 40.410 − 78 =

Answer key

  1. 162
  2. 123
  3. 49
  4. 52
  5. 83
  6. 488
  7. 162
  8. 504
  9. 318
  10. 374
  11. 572
  12. 42
  13. 136
  14. 325
  15. 247
  16. 315
  17. 117
  18. 472
  19. 153
  20. 379
  21. 334
  22. 302
  23. 100
  24. 108
  25. 57
  26. 116
  27. 183
  28. 172
  29. 494
  30. 320
  31. 65
  32. 517
  33. 61
  34. 262
  35. 279
  36. 557
  37. 290
  38. 180
  39. 93
  40. 332

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