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Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 276 · 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. 1.295 − 96 =
  2. 2.510 − 88 =
  3. 3.402 − 86 =
  4. 4.469 − 18 =
  5. 5.585 − 66 =
  6. 6.169 − 66 =
  7. 7.480 − 67 =
  8. 8.494 − 88 =
  9. 9.226 − 87 =
  10. 10.153 − 29 =
  11. 11.106 − 97 =
  12. 12.223 − 66 =
  13. 13.159 − 78 =
  14. 14.397 − 39 =
  15. 15.188 − 66 =
  16. 16.527 − 56 =
  17. 17.419 − 67 =
  18. 18.113 − 17 =
  19. 19.157 − 36 =
  20. 20.65 − 37 =
  21. 21.514 − 19 =
  22. 22.551 − 99 =
  23. 23.364 − 87 =
  24. 24.455 − 66 =
  25. 25.359 − 77 =
  26. 26.335 − 47 =
  27. 27.290 − 29 =
  28. 28.64 − 16 =
  29. 29.413 − 87 =
  30. 30.130 − 78 =
  31. 31.365 − 69 =
  32. 32.246 − 18 =
  33. 33.64 − 17 =
  34. 34.523 − 67 =
  35. 35.171 − 28 =
  36. 36.503 − 38 =
  37. 37.107 − 49 =
  38. 38.351 − 57 =
  39. 39.254 − 48 =
  40. 40.134 − 56 =

Answer key

  1. 199
  2. 422
  3. 316
  4. 451
  5. 519
  6. 103
  7. 413
  8. 406
  9. 139
  10. 124
  11. 9
  12. 157
  13. 81
  14. 358
  15. 122
  16. 471
  17. 352
  18. 96
  19. 121
  20. 28
  21. 495
  22. 452
  23. 277
  24. 389
  25. 282
  26. 288
  27. 261
  28. 48
  29. 326
  30. 52
  31. 296
  32. 228
  33. 47
  34. 456
  35. 143
  36. 465
  37. 58
  38. 294
  39. 206
  40. 78

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