← Same-change subtraction lesson New set →

Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 466 · 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. 1.221 − 57 =
  2. 2.509 − 27 =
  3. 3.275 − 96 =
  4. 4.183 − 98 =
  5. 5.414 − 28 =
  6. 6.308 − 19 =
  7. 7.116 − 59 =
  8. 8.131 − 37 =
  9. 9.268 − 96 =
  10. 10.110 − 89 =
  11. 11.342 − 78 =
  12. 12.171 − 38 =
  13. 13.384 − 17 =
  14. 14.401 − 39 =
  15. 15.553 − 17 =
  16. 16.246 − 79 =
  17. 17.511 − 86 =
  18. 18.442 − 18 =
  19. 19.186 − 99 =
  20. 20.72 − 67 =
  21. 21.309 − 98 =
  22. 22.161 − 88 =
  23. 23.120 − 17 =
  24. 24.298 − 19 =
  25. 25.172 − 28 =
  26. 26.97 − 48 =
  27. 27.85 − 57 =
  28. 28.105 − 98 =
  29. 29.67 − 66 =
  30. 30.570 − 99 =
  31. 31.219 − 19 =
  32. 32.508 − 16 =
  33. 33.557 − 79 =
  34. 34.262 − 26 =
  35. 35.124 − 38 =
  36. 36.558 − 49 =
  37. 37.582 − 49 =
  38. 38.263 − 29 =
  39. 39.569 − 28 =
  40. 40.187 − 97 =

Answer key

  1. 164
  2. 482
  3. 179
  4. 85
  5. 386
  6. 289
  7. 57
  8. 94
  9. 172
  10. 21
  11. 264
  12. 133
  13. 367
  14. 362
  15. 536
  16. 167
  17. 425
  18. 424
  19. 87
  20. 5
  21. 211
  22. 73
  23. 103
  24. 279
  25. 144
  26. 49
  27. 28
  28. 7
  29. 1
  30. 471
  31. 200
  32. 492
  33. 478
  34. 236
  35. 86
  36. 509
  37. 533
  38. 234
  39. 541
  40. 90

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