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Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 416 · 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. 1.299 − 49 =
  2. 2.207 − 57 =
  3. 3.189 − 97 =
  4. 4.316 − 27 =
  5. 5.143 − 19 =
  6. 6.405 − 56 =
  7. 7.520 − 38 =
  8. 8.166 − 39 =
  9. 9.406 − 26 =
  10. 10.258 − 46 =
  11. 11.325 − 89 =
  12. 12.431 − 27 =
  13. 13.183 − 86 =
  14. 14.167 − 28 =
  15. 15.167 − 36 =
  16. 16.332 − 46 =
  17. 17.147 − 57 =
  18. 18.238 − 18 =
  19. 19.536 − 79 =
  20. 20.377 − 88 =
  21. 21.213 − 76 =
  22. 22.380 − 76 =
  23. 23.157 − 98 =
  24. 24.219 − 27 =
  25. 25.78 − 38 =
  26. 26.279 − 58 =
  27. 27.205 − 18 =
  28. 28.534 − 88 =
  29. 29.374 − 57 =
  30. 30.233 − 27 =
  31. 31.112 − 87 =
  32. 32.182 − 38 =
  33. 33.375 − 79 =
  34. 34.477 − 27 =
  35. 35.140 − 57 =
  36. 36.447 − 96 =
  37. 37.330 − 76 =
  38. 38.370 − 88 =
  39. 39.174 − 19 =
  40. 40.228 − 17 =

Answer key

  1. 250
  2. 150
  3. 92
  4. 289
  5. 124
  6. 349
  7. 482
  8. 127
  9. 380
  10. 212
  11. 236
  12. 404
  13. 97
  14. 139
  15. 131
  16. 286
  17. 90
  18. 220
  19. 457
  20. 289
  21. 137
  22. 304
  23. 59
  24. 192
  25. 40
  26. 221
  27. 187
  28. 446
  29. 317
  30. 206
  31. 25
  32. 144
  33. 296
  34. 450
  35. 83
  36. 351
  37. 254
  38. 282
  39. 155
  40. 211

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