← Same-change subtraction lesson New set →

Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 159 · 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 − 27 =
  2. 2.557 − 98 =
  3. 3.219 − 68 =
  4. 4.474 − 77 =
  5. 5.338 − 78 =
  6. 6.86 − 19 =
  7. 7.374 − 98 =
  8. 8.226 − 19 =
  9. 9.207 − 17 =
  10. 10.345 − 27 =
  11. 11.255 − 17 =
  12. 12.176 − 89 =
  13. 13.183 − 67 =
  14. 14.189 − 96 =
  15. 15.139 − 66 =
  16. 16.213 − 99 =
  17. 17.416 − 66 =
  18. 18.128 − 98 =
  19. 19.592 − 87 =
  20. 20.168 − 56 =
  21. 21.407 − 59 =
  22. 22.115 − 28 =
  23. 23.79 − 56 =
  24. 24.255 − 18 =
  25. 25.169 − 87 =
  26. 26.556 − 78 =
  27. 27.170 − 48 =
  28. 28.198 − 57 =
  29. 29.528 − 46 =
  30. 30.433 − 48 =
  31. 31.588 − 76 =
  32. 32.437 − 49 =
  33. 33.64 − 49 =
  34. 34.239 − 37 =
  35. 35.499 − 56 =
  36. 36.78 − 76 =
  37. 37.329 − 17 =
  38. 38.208 − 89 =
  39. 39.435 − 47 =
  40. 40.460 − 27 =

Answer key

  1. 271
  2. 459
  3. 151
  4. 397
  5. 260
  6. 67
  7. 276
  8. 207
  9. 190
  10. 318
  11. 238
  12. 87
  13. 116
  14. 93
  15. 73
  16. 114
  17. 350
  18. 30
  19. 505
  20. 112
  21. 348
  22. 87
  23. 23
  24. 237
  25. 82
  26. 478
  27. 122
  28. 141
  29. 482
  30. 385
  31. 512
  32. 388
  33. 15
  34. 202
  35. 443
  36. 2
  37. 312
  38. 119
  39. 388
  40. 433

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