← Same-change subtraction lesson New set →

Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 979 · 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. 1.569 − 48 =
  2. 2.272 − 96 =
  3. 3.275 − 37 =
  4. 4.271 − 67 =
  5. 5.433 − 66 =
  6. 6.532 − 66 =
  7. 7.246 − 67 =
  8. 8.144 − 76 =
  9. 9.168 − 77 =
  10. 10.112 − 58 =
  11. 11.571 − 57 =
  12. 12.185 − 17 =
  13. 13.171 − 77 =
  14. 14.178 − 38 =
  15. 15.58 − 28 =
  16. 16.285 − 16 =
  17. 17.413 − 36 =
  18. 18.218 − 97 =
  19. 19.490 − 59 =
  20. 20.439 − 38 =
  21. 21.101 − 38 =
  22. 22.546 − 97 =
  23. 23.122 − 18 =
  24. 24.441 − 69 =
  25. 25.383 − 56 =
  26. 26.285 − 47 =
  27. 27.180 − 77 =
  28. 28.163 − 86 =
  29. 29.569 − 76 =
  30. 30.66 − 27 =
  31. 31.425 − 79 =
  32. 32.413 − 36 =
  33. 33.434 − 19 =
  34. 34.384 − 57 =
  35. 35.221 − 49 =
  36. 36.90 − 28 =
  37. 37.463 − 96 =
  38. 38.196 − 88 =
  39. 39.476 − 68 =
  40. 40.421 − 96 =

Answer key

  1. 521
  2. 176
  3. 238
  4. 204
  5. 367
  6. 466
  7. 179
  8. 68
  9. 91
  10. 54
  11. 514
  12. 168
  13. 94
  14. 140
  15. 30
  16. 269
  17. 377
  18. 121
  19. 431
  20. 401
  21. 63
  22. 449
  23. 104
  24. 372
  25. 327
  26. 238
  27. 103
  28. 77
  29. 493
  30. 39
  31. 346
  32. 377
  33. 415
  34. 327
  35. 172
  36. 62
  37. 367
  38. 108
  39. 408
  40. 325

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