← Same-change subtraction lesson New set →

Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 718 · 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. 1.112 − 76 =
  2. 2.371 − 96 =
  3. 3.145 − 88 =
  4. 4.358 − 56 =
  5. 5.166 − 88 =
  6. 6.560 − 76 =
  7. 7.150 − 68 =
  8. 8.386 − 86 =
  9. 9.349 − 99 =
  10. 10.198 − 98 =
  11. 11.549 − 39 =
  12. 12.423 − 68 =
  13. 13.273 − 99 =
  14. 14.262 − 17 =
  15. 15.160 − 56 =
  16. 16.211 − 87 =
  17. 17.410 − 86 =
  18. 18.341 − 47 =
  19. 19.162 − 78 =
  20. 20.348 − 46 =
  21. 21.147 − 38 =
  22. 22.391 − 57 =
  23. 23.558 − 16 =
  24. 24.485 − 59 =
  25. 25.139 − 26 =
  26. 26.325 − 69 =
  27. 27.587 − 46 =
  28. 28.504 − 86 =
  29. 29.159 − 36 =
  30. 30.146 − 69 =
  31. 31.544 − 19 =
  32. 32.460 − 28 =
  33. 33.84 − 18 =
  34. 34.262 − 19 =
  35. 35.471 − 49 =
  36. 36.492 − 78 =
  37. 37.364 − 99 =
  38. 38.438 − 99 =
  39. 39.582 − 18 =
  40. 40.93 − 86 =

Answer key

  1. 36
  2. 275
  3. 57
  4. 302
  5. 78
  6. 484
  7. 82
  8. 300
  9. 250
  10. 100
  11. 510
  12. 355
  13. 174
  14. 245
  15. 104
  16. 124
  17. 324
  18. 294
  19. 84
  20. 302
  21. 109
  22. 334
  23. 542
  24. 426
  25. 113
  26. 256
  27. 541
  28. 418
  29. 123
  30. 77
  31. 525
  32. 432
  33. 66
  34. 243
  35. 422
  36. 414
  37. 265
  38. 339
  39. 564
  40. 7

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