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Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 235 · 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. 1.317 − 26 =
  2. 2.545 − 86 =
  3. 3.558 − 87 =
  4. 4.110 − 49 =
  5. 5.74 − 56 =
  6. 6.155 − 19 =
  7. 7.171 − 46 =
  8. 8.131 − 99 =
  9. 9.453 − 28 =
  10. 10.402 − 99 =
  11. 11.339 − 79 =
  12. 12.108 − 98 =
  13. 13.263 − 69 =
  14. 14.119 − 16 =
  15. 15.437 − 99 =
  16. 16.440 − 36 =
  17. 17.182 − 27 =
  18. 18.257 − 28 =
  19. 19.175 − 99 =
  20. 20.110 − 36 =
  21. 21.173 − 96 =
  22. 22.176 − 58 =
  23. 23.459 − 49 =
  24. 24.468 − 57 =
  25. 25.278 − 66 =
  26. 26.235 − 89 =
  27. 27.154 − 96 =
  28. 28.561 − 47 =
  29. 29.220 − 16 =
  30. 30.115 − 86 =
  31. 31.212 − 27 =
  32. 32.201 − 98 =
  33. 33.381 − 99 =
  34. 34.207 − 46 =
  35. 35.130 − 36 =
  36. 36.318 − 16 =
  37. 37.544 − 96 =
  38. 38.430 − 19 =
  39. 39.334 − 89 =
  40. 40.110 − 36 =

Answer key

  1. 291
  2. 459
  3. 471
  4. 61
  5. 18
  6. 136
  7. 125
  8. 32
  9. 425
  10. 303
  11. 260
  12. 10
  13. 194
  14. 103
  15. 338
  16. 404
  17. 155
  18. 229
  19. 76
  20. 74
  21. 77
  22. 118
  23. 410
  24. 411
  25. 212
  26. 146
  27. 58
  28. 514
  29. 204
  30. 29
  31. 185
  32. 103
  33. 282
  34. 161
  35. 94
  36. 302
  37. 448
  38. 411
  39. 245
  40. 74

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