← Same-change subtraction lesson New set →

Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 535 · 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. 1.218 − 96 =
  2. 2.512 − 86 =
  3. 3.341 − 36 =
  4. 4.212 − 16 =
  5. 5.166 − 27 =
  6. 6.386 − 69 =
  7. 7.393 − 68 =
  8. 8.544 − 77 =
  9. 9.478 − 89 =
  10. 10.292 − 26 =
  11. 11.80 − 49 =
  12. 12.367 − 88 =
  13. 13.143 − 28 =
  14. 14.507 − 28 =
  15. 15.505 − 49 =
  16. 16.138 − 18 =
  17. 17.334 − 19 =
  18. 18.556 − 99 =
  19. 19.437 − 17 =
  20. 20.189 − 38 =
  21. 21.278 − 89 =
  22. 22.586 − 78 =
  23. 23.563 − 16 =
  24. 24.212 − 56 =
  25. 25.229 − 46 =
  26. 26.266 − 77 =
  27. 27.65 − 47 =
  28. 28.182 − 26 =
  29. 29.522 − 68 =
  30. 30.175 − 26 =
  31. 31.405 − 58 =
  32. 32.354 − 78 =
  33. 33.162 − 17 =
  34. 34.351 − 16 =
  35. 35.210 − 58 =
  36. 36.152 − 28 =
  37. 37.192 − 46 =
  38. 38.143 − 57 =
  39. 39.554 − 37 =
  40. 40.496 − 58 =

Answer key

  1. 122
  2. 426
  3. 305
  4. 196
  5. 139
  6. 317
  7. 325
  8. 467
  9. 389
  10. 266
  11. 31
  12. 279
  13. 115
  14. 479
  15. 456
  16. 120
  17. 315
  18. 457
  19. 420
  20. 151
  21. 189
  22. 508
  23. 547
  24. 156
  25. 183
  26. 189
  27. 18
  28. 156
  29. 454
  30. 149
  31. 347
  32. 276
  33. 145
  34. 335
  35. 152
  36. 124
  37. 146
  38. 86
  39. 517
  40. 438

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