← Same-change subtraction lesson New set →

Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 397 · 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. 1.506 − 68 =
  2. 2.379 − 17 =
  3. 3.437 − 27 =
  4. 4.409 − 86 =
  5. 5.321 − 38 =
  6. 6.393 − 86 =
  7. 7.591 − 68 =
  8. 8.289 − 97 =
  9. 9.177 − 66 =
  10. 10.186 − 59 =
  11. 11.418 − 37 =
  12. 12.328 − 46 =
  13. 13.409 − 97 =
  14. 14.493 − 87 =
  15. 15.173 − 78 =
  16. 16.412 − 99 =
  17. 17.151 − 69 =
  18. 18.551 − 67 =
  19. 19.177 − 69 =
  20. 20.531 − 66 =
  21. 21.343 − 46 =
  22. 22.127 − 36 =
  23. 23.588 − 27 =
  24. 24.215 − 36 =
  25. 25.252 − 38 =
  26. 26.74 − 36 =
  27. 27.542 − 38 =
  28. 28.258 − 69 =
  29. 29.90 − 39 =
  30. 30.124 − 38 =
  31. 31.119 − 86 =
  32. 32.162 − 26 =
  33. 33.405 − 19 =
  34. 34.61 − 46 =
  35. 35.110 − 98 =
  36. 36.147 − 96 =
  37. 37.354 − 36 =
  38. 38.451 − 19 =
  39. 39.179 − 98 =
  40. 40.338 − 58 =

Answer key

  1. 438
  2. 362
  3. 410
  4. 323
  5. 283
  6. 307
  7. 523
  8. 192
  9. 111
  10. 127
  11. 381
  12. 282
  13. 312
  14. 406
  15. 95
  16. 313
  17. 82
  18. 484
  19. 108
  20. 465
  21. 297
  22. 91
  23. 561
  24. 179
  25. 214
  26. 38
  27. 504
  28. 189
  29. 51
  30. 86
  31. 33
  32. 136
  33. 386
  34. 15
  35. 12
  36. 51
  37. 318
  38. 432
  39. 81
  40. 280

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