← Same-change subtraction lesson New set →

Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 488 · 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. 1.228 − 89 =
  2. 2.81 − 26 =
  3. 3.217 − 89 =
  4. 4.258 − 49 =
  5. 5.364 − 39 =
  6. 6.319 − 88 =
  7. 7.170 − 86 =
  8. 8.127 − 38 =
  9. 9.145 − 16 =
  10. 10.137 − 26 =
  11. 11.597 − 98 =
  12. 12.158 − 19 =
  13. 13.53 − 18 =
  14. 14.553 − 29 =
  15. 15.406 − 16 =
  16. 16.167 − 89 =
  17. 17.236 − 66 =
  18. 18.340 − 37 =
  19. 19.568 − 49 =
  20. 20.338 − 26 =
  21. 21.92 − 27 =
  22. 22.489 − 89 =
  23. 23.589 − 86 =
  24. 24.149 − 76 =
  25. 25.548 − 27 =
  26. 26.275 − 39 =
  27. 27.483 − 58 =
  28. 28.188 − 96 =
  29. 29.370 − 69 =
  30. 30.375 − 67 =
  31. 31.443 − 27 =
  32. 32.298 − 29 =
  33. 33.525 − 36 =
  34. 34.349 − 26 =
  35. 35.54 − 27 =
  36. 36.453 − 56 =
  37. 37.192 − 28 =
  38. 38.145 − 37 =
  39. 39.241 − 77 =
  40. 40.228 − 49 =

Answer key

  1. 139
  2. 55
  3. 128
  4. 209
  5. 325
  6. 231
  7. 84
  8. 89
  9. 129
  10. 111
  11. 499
  12. 139
  13. 35
  14. 524
  15. 390
  16. 78
  17. 170
  18. 303
  19. 519
  20. 312
  21. 65
  22. 400
  23. 503
  24. 73
  25. 521
  26. 236
  27. 425
  28. 92
  29. 301
  30. 308
  31. 416
  32. 269
  33. 489
  34. 323
  35. 27
  36. 397
  37. 164
  38. 108
  39. 164
  40. 179

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