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Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 467 · 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. 1.298 − 36 =
  2. 2.125 − 48 =
  3. 3.157 − 28 =
  4. 4.467 − 79 =
  5. 5.461 − 18 =
  6. 6.354 − 47 =
  7. 7.227 − 37 =
  8. 8.236 − 58 =
  9. 9.322 − 39 =
  10. 10.518 − 58 =
  11. 11.69 − 27 =
  12. 12.440 − 27 =
  13. 13.522 − 38 =
  14. 14.156 − 39 =
  15. 15.577 − 78 =
  16. 16.567 − 36 =
  17. 17.343 − 37 =
  18. 18.175 − 37 =
  19. 19.543 − 76 =
  20. 20.197 − 79 =
  21. 21.280 − 16 =
  22. 22.115 − 87 =
  23. 23.430 − 48 =
  24. 24.178 − 26 =
  25. 25.325 − 17 =
  26. 26.578 − 57 =
  27. 27.431 − 67 =
  28. 28.477 − 77 =
  29. 29.542 − 68 =
  30. 30.333 − 47 =
  31. 31.306 − 17 =
  32. 32.180 − 67 =
  33. 33.585 − 78 =
  34. 34.165 − 58 =
  35. 35.287 − 19 =
  36. 36.156 − 29 =
  37. 37.269 − 79 =
  38. 38.310 − 69 =
  39. 39.133 − 77 =
  40. 40.453 − 37 =

Answer key

  1. 262
  2. 77
  3. 129
  4. 388
  5. 443
  6. 307
  7. 190
  8. 178
  9. 283
  10. 460
  11. 42
  12. 413
  13. 484
  14. 117
  15. 499
  16. 531
  17. 306
  18. 138
  19. 467
  20. 118
  21. 264
  22. 28
  23. 382
  24. 152
  25. 308
  26. 521
  27. 364
  28. 400
  29. 474
  30. 286
  31. 289
  32. 113
  33. 507
  34. 107
  35. 268
  36. 127
  37. 190
  38. 241
  39. 56
  40. 416

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