← Same-change subtraction lesson New set →

Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 20 · 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. 1.347 − 19 =
  2. 2.200 − 76 =
  3. 3.143 − 38 =
  4. 4.187 − 79 =
  5. 5.168 − 96 =
  6. 6.389 − 99 =
  7. 7.559 − 36 =
  8. 8.363 − 46 =
  9. 9.130 − 98 =
  10. 10.500 − 26 =
  11. 11.137 − 39 =
  12. 12.426 − 46 =
  13. 13.71 − 66 =
  14. 14.389 − 29 =
  15. 15.562 − 27 =
  16. 16.190 − 18 =
  17. 17.551 − 79 =
  18. 18.187 − 89 =
  19. 19.179 − 96 =
  20. 20.556 − 87 =
  21. 21.102 − 38 =
  22. 22.144 − 76 =
  23. 23.559 − 88 =
  24. 24.236 − 58 =
  25. 25.576 − 19 =
  26. 26.119 − 97 =
  27. 27.152 − 88 =
  28. 28.115 − 37 =
  29. 29.573 − 36 =
  30. 30.163 − 58 =
  31. 31.316 − 68 =
  32. 32.565 − 77 =
  33. 33.155 − 57 =
  34. 34.577 − 16 =
  35. 35.80 − 39 =
  36. 36.247 − 36 =
  37. 37.102 − 17 =
  38. 38.180 − 29 =
  39. 39.454 − 87 =
  40. 40.439 − 29 =

Answer key

  1. 328
  2. 124
  3. 105
  4. 108
  5. 72
  6. 290
  7. 523
  8. 317
  9. 32
  10. 474
  11. 98
  12. 380
  13. 5
  14. 360
  15. 535
  16. 172
  17. 472
  18. 98
  19. 83
  20. 469
  21. 64
  22. 68
  23. 471
  24. 178
  25. 557
  26. 22
  27. 64
  28. 78
  29. 537
  30. 105
  31. 248
  32. 488
  33. 98
  34. 561
  35. 41
  36. 211
  37. 85
  38. 151
  39. 367
  40. 410

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