← Same-change subtraction lesson New set →

Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 256 · 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. 1.413 − 28 =
  2. 2.342 − 68 =
  3. 3.243 − 59 =
  4. 4.179 − 27 =
  5. 5.586 − 38 =
  6. 6.238 − 98 =
  7. 7.494 − 16 =
  8. 8.296 − 28 =
  9. 9.576 − 39 =
  10. 10.186 − 67 =
  11. 11.209 − 16 =
  12. 12.535 − 69 =
  13. 13.336 − 39 =
  14. 14.130 − 36 =
  15. 15.498 − 27 =
  16. 16.402 − 16 =
  17. 17.528 − 36 =
  18. 18.194 − 76 =
  19. 19.239 − 56 =
  20. 20.304 − 76 =
  21. 21.228 − 78 =
  22. 22.358 − 36 =
  23. 23.147 − 86 =
  24. 24.247 − 26 =
  25. 25.547 − 28 =
  26. 26.158 − 76 =
  27. 27.349 − 48 =
  28. 28.78 − 57 =
  29. 29.148 − 96 =
  30. 30.591 − 36 =
  31. 31.57 − 28 =
  32. 32.456 − 56 =
  33. 33.478 − 49 =
  34. 34.67 − 56 =
  35. 35.347 − 57 =
  36. 36.300 − 36 =
  37. 37.97 − 48 =
  38. 38.360 − 16 =
  39. 39.106 − 98 =
  40. 40.583 − 98 =

Answer key

  1. 385
  2. 274
  3. 184
  4. 152
  5. 548
  6. 140
  7. 478
  8. 268
  9. 537
  10. 119
  11. 193
  12. 466
  13. 297
  14. 94
  15. 471
  16. 386
  17. 492
  18. 118
  19. 183
  20. 228
  21. 150
  22. 322
  23. 61
  24. 221
  25. 519
  26. 82
  27. 301
  28. 21
  29. 52
  30. 555
  31. 29
  32. 400
  33. 429
  34. 11
  35. 290
  36. 264
  37. 49
  38. 344
  39. 8
  40. 485

Free speed calculation lessons, practice and worksheets at talentjr.in/speed-maths