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Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 196 · 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. 1.195 − 98 =
  2. 2.136 − 28 =
  3. 3.541 − 96 =
  4. 4.279 − 29 =
  5. 5.563 − 38 =
  6. 6.527 − 99 =
  7. 7.149 − 87 =
  8. 8.315 − 26 =
  9. 9.427 − 77 =
  10. 10.454 − 96 =
  11. 11.467 − 66 =
  12. 12.489 − 69 =
  13. 13.463 − 67 =
  14. 14.495 − 76 =
  15. 15.536 − 56 =
  16. 16.553 − 28 =
  17. 17.209 − 57 =
  18. 18.354 − 66 =
  19. 19.164 − 87 =
  20. 20.148 − 56 =
  21. 21.236 − 87 =
  22. 22.206 − 16 =
  23. 23.109 − 78 =
  24. 24.147 − 57 =
  25. 25.58 − 36 =
  26. 26.320 − 29 =
  27. 27.124 − 79 =
  28. 28.167 − 58 =
  29. 29.163 − 68 =
  30. 30.234 − 56 =
  31. 31.423 − 89 =
  32. 32.102 − 96 =
  33. 33.400 − 88 =
  34. 34.462 − 18 =
  35. 35.92 − 19 =
  36. 36.347 − 88 =
  37. 37.153 − 59 =
  38. 38.237 − 79 =
  39. 39.462 − 19 =
  40. 40.240 − 96 =

Answer key

  1. 97
  2. 108
  3. 445
  4. 250
  5. 525
  6. 428
  7. 62
  8. 289
  9. 350
  10. 358
  11. 401
  12. 420
  13. 396
  14. 419
  15. 480
  16. 525
  17. 152
  18. 288
  19. 77
  20. 92
  21. 149
  22. 190
  23. 31
  24. 90
  25. 22
  26. 291
  27. 45
  28. 109
  29. 95
  30. 178
  31. 334
  32. 6
  33. 312
  34. 444
  35. 73
  36. 259
  37. 94
  38. 158
  39. 443
  40. 144

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