← Same-change subtraction lesson New set →

Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 981 · 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. 1.434 − 48 =
  2. 2.507 − 27 =
  3. 3.412 − 57 =
  4. 4.144 − 88 =
  5. 5.459 − 19 =
  6. 6.359 − 58 =
  7. 7.192 − 97 =
  8. 8.147 − 79 =
  9. 9.169 − 26 =
  10. 10.178 − 67 =
  11. 11.337 − 56 =
  12. 12.109 − 37 =
  13. 13.582 − 36 =
  14. 14.172 − 16 =
  15. 15.111 − 87 =
  16. 16.446 − 78 =
  17. 17.100 − 19 =
  18. 18.582 − 16 =
  19. 19.580 − 17 =
  20. 20.380 − 99 =
  21. 21.133 − 17 =
  22. 22.198 − 86 =
  23. 23.123 − 86 =
  24. 24.415 − 49 =
  25. 25.526 − 57 =
  26. 26.579 − 48 =
  27. 27.326 − 57 =
  28. 28.371 − 37 =
  29. 29.518 − 26 =
  30. 30.410 − 28 =
  31. 31.204 − 46 =
  32. 32.421 − 17 =
  33. 33.409 − 37 =
  34. 34.144 − 36 =
  35. 35.432 − 38 =
  36. 36.463 − 69 =
  37. 37.225 − 68 =
  38. 38.225 − 69 =
  39. 39.340 − 58 =
  40. 40.67 − 46 =

Answer key

  1. 386
  2. 480
  3. 355
  4. 56
  5. 440
  6. 301
  7. 95
  8. 68
  9. 143
  10. 111
  11. 281
  12. 72
  13. 546
  14. 156
  15. 24
  16. 368
  17. 81
  18. 566
  19. 563
  20. 281
  21. 116
  22. 112
  23. 37
  24. 366
  25. 469
  26. 531
  27. 269
  28. 334
  29. 492
  30. 382
  31. 158
  32. 404
  33. 372
  34. 108
  35. 394
  36. 394
  37. 157
  38. 156
  39. 282
  40. 21

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