← Same-change subtraction lesson New set →

Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 844 · 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. 1.537 − 26 =
  2. 2.286 − 78 =
  3. 3.151 − 96 =
  4. 4.581 − 77 =
  5. 5.205 − 88 =
  6. 6.547 − 49 =
  7. 7.416 − 87 =
  8. 8.320 − 57 =
  9. 9.455 − 88 =
  10. 10.215 − 59 =
  11. 11.151 − 69 =
  12. 12.504 − 58 =
  13. 13.503 − 78 =
  14. 14.96 − 78 =
  15. 15.70 − 68 =
  16. 16.211 − 39 =
  17. 17.364 − 76 =
  18. 18.408 − 37 =
  19. 19.537 − 36 =
  20. 20.99 − 46 =
  21. 21.352 − 96 =
  22. 22.71 − 27 =
  23. 23.209 − 27 =
  24. 24.262 − 96 =
  25. 25.576 − 59 =
  26. 26.380 − 77 =
  27. 27.374 − 86 =
  28. 28.468 − 17 =
  29. 29.190 − 19 =
  30. 30.388 − 88 =
  31. 31.285 − 49 =
  32. 32.111 − 27 =
  33. 33.128 − 58 =
  34. 34.471 − 88 =
  35. 35.444 − 28 =
  36. 36.177 − 88 =
  37. 37.256 − 88 =
  38. 38.102 − 47 =
  39. 39.411 − 69 =
  40. 40.258 − 76 =

Answer key

  1. 511
  2. 208
  3. 55
  4. 504
  5. 117
  6. 498
  7. 329
  8. 263
  9. 367
  10. 156
  11. 82
  12. 446
  13. 425
  14. 18
  15. 2
  16. 172
  17. 288
  18. 371
  19. 501
  20. 53
  21. 256
  22. 44
  23. 182
  24. 166
  25. 517
  26. 303
  27. 288
  28. 451
  29. 171
  30. 300
  31. 236
  32. 84
  33. 70
  34. 383
  35. 416
  36. 89
  37. 168
  38. 55
  39. 342
  40. 182

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