← Same-change subtraction lesson New set →

Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 697 · 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. 1.453 − 17 =
  2. 2.145 − 38 =
  3. 3.120 − 29 =
  4. 4.67 − 56 =
  5. 5.147 − 89 =
  6. 6.108 − 28 =
  7. 7.191 − 99 =
  8. 8.586 − 78 =
  9. 9.522 − 88 =
  10. 10.586 − 96 =
  11. 11.296 − 58 =
  12. 12.136 − 88 =
  13. 13.498 − 76 =
  14. 14.348 − 56 =
  15. 15.77 − 38 =
  16. 16.324 − 36 =
  17. 17.236 − 77 =
  18. 18.157 − 86 =
  19. 19.560 − 79 =
  20. 20.426 − 16 =
  21. 21.474 − 18 =
  22. 22.287 − 37 =
  23. 23.578 − 17 =
  24. 24.537 − 56 =
  25. 25.102 − 57 =
  26. 26.55 − 38 =
  27. 27.172 − 87 =
  28. 28.488 − 26 =
  29. 29.572 − 56 =
  30. 30.190 − 36 =
  31. 31.399 − 16 =
  32. 32.197 − 29 =
  33. 33.187 − 67 =
  34. 34.146 − 96 =
  35. 35.443 − 19 =
  36. 36.553 − 79 =
  37. 37.178 − 68 =
  38. 38.400 − 47 =
  39. 39.206 − 36 =
  40. 40.288 − 59 =

Answer key

  1. 436
  2. 107
  3. 91
  4. 11
  5. 58
  6. 80
  7. 92
  8. 508
  9. 434
  10. 490
  11. 238
  12. 48
  13. 422
  14. 292
  15. 39
  16. 288
  17. 159
  18. 71
  19. 481
  20. 410
  21. 456
  22. 250
  23. 561
  24. 481
  25. 45
  26. 17
  27. 85
  28. 462
  29. 516
  30. 154
  31. 383
  32. 168
  33. 120
  34. 50
  35. 424
  36. 474
  37. 110
  38. 353
  39. 170
  40. 229

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