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Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 310 · 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. 1.479 − 26 =
  2. 2.392 − 96 =
  3. 3.559 − 26 =
  4. 4.358 − 77 =
  5. 5.335 − 69 =
  6. 6.140 − 79 =
  7. 7.423 − 26 =
  8. 8.244 − 49 =
  9. 9.281 − 39 =
  10. 10.569 − 98 =
  11. 11.251 − 89 =
  12. 12.157 − 97 =
  13. 13.419 − 77 =
  14. 14.105 − 66 =
  15. 15.515 − 46 =
  16. 16.218 − 67 =
  17. 17.470 − 49 =
  18. 18.553 − 98 =
  19. 19.189 − 67 =
  20. 20.65 − 57 =
  21. 21.135 − 47 =
  22. 22.568 − 39 =
  23. 23.217 − 76 =
  24. 24.198 − 69 =
  25. 25.80 − 56 =
  26. 26.152 − 79 =
  27. 27.146 − 48 =
  28. 28.488 − 16 =
  29. 29.415 − 36 =
  30. 30.483 − 96 =
  31. 31.524 − 29 =
  32. 32.291 − 56 =
  33. 33.364 − 26 =
  34. 34.355 − 37 =
  35. 35.455 − 38 =
  36. 36.162 − 97 =
  37. 37.458 − 67 =
  38. 38.162 − 57 =
  39. 39.117 − 59 =
  40. 40.441 − 36 =

Answer key

  1. 453
  2. 296
  3. 533
  4. 281
  5. 266
  6. 61
  7. 397
  8. 195
  9. 242
  10. 471
  11. 162
  12. 60
  13. 342
  14. 39
  15. 469
  16. 151
  17. 421
  18. 455
  19. 122
  20. 8
  21. 88
  22. 529
  23. 141
  24. 129
  25. 24
  26. 73
  27. 98
  28. 472
  29. 379
  30. 387
  31. 495
  32. 235
  33. 338
  34. 318
  35. 417
  36. 65
  37. 391
  38. 105
  39. 58
  40. 405

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