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Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 265 · 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. 1.430 − 77 =
  2. 2.258 − 97 =
  3. 3.522 − 37 =
  4. 4.590 − 49 =
  5. 5.490 − 16 =
  6. 6.135 − 39 =
  7. 7.261 − 29 =
  8. 8.306 − 66 =
  9. 9.105 − 38 =
  10. 10.280 − 48 =
  11. 11.335 − 76 =
  12. 12.82 − 39 =
  13. 13.362 − 89 =
  14. 14.300 − 39 =
  15. 15.258 − 58 =
  16. 16.520 − 99 =
  17. 17.249 − 46 =
  18. 18.468 − 76 =
  19. 19.201 − 37 =
  20. 20.323 − 76 =
  21. 21.175 − 86 =
  22. 22.89 − 86 =
  23. 23.155 − 97 =
  24. 24.266 − 59 =
  25. 25.287 − 76 =
  26. 26.164 − 86 =
  27. 27.292 − 29 =
  28. 28.492 − 66 =
  29. 29.372 − 19 =
  30. 30.523 − 58 =
  31. 31.546 − 38 =
  32. 32.186 − 88 =
  33. 33.315 − 39 =
  34. 34.416 − 47 =
  35. 35.478 − 37 =
  36. 36.172 − 88 =
  37. 37.302 − 76 =
  38. 38.176 − 97 =
  39. 39.578 − 79 =
  40. 40.537 − 29 =

Answer key

  1. 353
  2. 161
  3. 485
  4. 541
  5. 474
  6. 96
  7. 232
  8. 240
  9. 67
  10. 232
  11. 259
  12. 43
  13. 273
  14. 261
  15. 200
  16. 421
  17. 203
  18. 392
  19. 164
  20. 247
  21. 89
  22. 3
  23. 58
  24. 207
  25. 211
  26. 78
  27. 263
  28. 426
  29. 353
  30. 465
  31. 508
  32. 98
  33. 276
  34. 369
  35. 441
  36. 84
  37. 226
  38. 79
  39. 499
  40. 508

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