← Same-change subtraction lesson New set →

Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 769 · 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. 1.327 − 89 =
  2. 2.183 − 89 =
  3. 3.482 − 86 =
  4. 4.217 − 36 =
  5. 5.550 − 38 =
  6. 6.188 − 56 =
  7. 7.510 − 28 =
  8. 8.208 − 58 =
  9. 9.546 − 69 =
  10. 10.176 − 87 =
  11. 11.59 − 49 =
  12. 12.81 − 78 =
  13. 13.358 − 58 =
  14. 14.405 − 36 =
  15. 15.330 − 26 =
  16. 16.382 − 98 =
  17. 17.152 − 56 =
  18. 18.160 − 19 =
  19. 19.135 − 28 =
  20. 20.537 − 86 =
  21. 21.586 − 77 =
  22. 22.513 − 28 =
  23. 23.126 − 77 =
  24. 24.260 − 36 =
  25. 25.550 − 76 =
  26. 26.558 − 27 =
  27. 27.377 − 36 =
  28. 28.211 − 39 =
  29. 29.513 − 38 =
  30. 30.574 − 48 =
  31. 31.137 − 39 =
  32. 32.341 − 48 =
  33. 33.348 − 98 =
  34. 34.279 − 96 =
  35. 35.274 − 86 =
  36. 36.370 − 79 =
  37. 37.284 − 78 =
  38. 38.367 − 76 =
  39. 39.506 − 99 =
  40. 40.468 − 38 =

Answer key

  1. 238
  2. 94
  3. 396
  4. 181
  5. 512
  6. 132
  7. 482
  8. 150
  9. 477
  10. 89
  11. 10
  12. 3
  13. 300
  14. 369
  15. 304
  16. 284
  17. 96
  18. 141
  19. 107
  20. 451
  21. 509
  22. 485
  23. 49
  24. 224
  25. 474
  26. 531
  27. 341
  28. 172
  29. 475
  30. 526
  31. 98
  32. 293
  33. 250
  34. 183
  35. 188
  36. 291
  37. 206
  38. 291
  39. 407
  40. 430

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