← Same-change subtraction lesson New set →

Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 528 · 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. 1.96 − 39 =
  2. 2.548 − 87 =
  3. 3.133 − 69 =
  4. 4.361 − 19 =
  5. 5.329 − 86 =
  6. 6.494 − 96 =
  7. 7.436 − 27 =
  8. 8.174 − 87 =
  9. 9.518 − 36 =
  10. 10.172 − 29 =
  11. 11.184 − 88 =
  12. 12.153 − 87 =
  13. 13.140 − 86 =
  14. 14.513 − 76 =
  15. 15.331 − 67 =
  16. 16.457 − 28 =
  17. 17.116 − 77 =
  18. 18.481 − 46 =
  19. 19.412 − 38 =
  20. 20.151 − 47 =
  21. 21.569 − 99 =
  22. 22.346 − 46 =
  23. 23.152 − 97 =
  24. 24.495 − 97 =
  25. 25.126 − 49 =
  26. 26.301 − 26 =
  27. 27.220 − 26 =
  28. 28.226 − 59 =
  29. 29.394 − 17 =
  30. 30.116 − 49 =
  31. 31.430 − 58 =
  32. 32.519 − 27 =
  33. 33.416 − 46 =
  34. 34.263 − 46 =
  35. 35.373 − 46 =
  36. 36.435 − 76 =
  37. 37.219 − 89 =
  38. 38.449 − 97 =
  39. 39.561 − 29 =
  40. 40.151 − 56 =

Answer key

  1. 57
  2. 461
  3. 64
  4. 342
  5. 243
  6. 398
  7. 409
  8. 87
  9. 482
  10. 143
  11. 96
  12. 66
  13. 54
  14. 437
  15. 264
  16. 429
  17. 39
  18. 435
  19. 374
  20. 104
  21. 470
  22. 300
  23. 55
  24. 398
  25. 77
  26. 275
  27. 194
  28. 167
  29. 377
  30. 67
  31. 372
  32. 492
  33. 370
  34. 217
  35. 327
  36. 359
  37. 130
  38. 352
  39. 532
  40. 95

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