← Same-change subtraction lesson New set →

Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 705 · 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. 1.486 − 97 =
  2. 2.418 − 38 =
  3. 3.258 − 28 =
  4. 4.356 − 68 =
  5. 5.406 − 76 =
  6. 6.553 − 16 =
  7. 7.114 − 67 =
  8. 8.148 − 58 =
  9. 9.92 − 47 =
  10. 10.99 − 16 =
  11. 11.165 − 58 =
  12. 12.69 − 16 =
  13. 13.205 − 57 =
  14. 14.337 − 99 =
  15. 15.206 − 89 =
  16. 16.271 − 46 =
  17. 17.582 − 87 =
  18. 18.566 − 48 =
  19. 19.144 − 36 =
  20. 20.112 − 58 =
  21. 21.581 − 29 =
  22. 22.188 − 49 =
  23. 23.267 − 16 =
  24. 24.502 − 79 =
  25. 25.587 − 49 =
  26. 26.56 − 39 =
  27. 27.418 − 59 =
  28. 28.303 − 86 =
  29. 29.62 − 58 =
  30. 30.462 − 37 =
  31. 31.159 − 56 =
  32. 32.492 − 56 =
  33. 33.529 − 37 =
  34. 34.275 − 88 =
  35. 35.221 − 16 =
  36. 36.197 − 98 =
  37. 37.293 − 76 =
  38. 38.107 − 48 =
  39. 39.557 − 89 =
  40. 40.261 − 56 =

Answer key

  1. 389
  2. 380
  3. 230
  4. 288
  5. 330
  6. 537
  7. 47
  8. 90
  9. 45
  10. 83
  11. 107
  12. 53
  13. 148
  14. 238
  15. 117
  16. 225
  17. 495
  18. 518
  19. 108
  20. 54
  21. 552
  22. 139
  23. 251
  24. 423
  25. 538
  26. 17
  27. 359
  28. 217
  29. 4
  30. 425
  31. 103
  32. 436
  33. 492
  34. 187
  35. 205
  36. 99
  37. 217
  38. 59
  39. 468
  40. 205

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