← Same-change subtraction lesson New set →

Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 70 · 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. 1.236 − 27 =
  2. 2.127 − 76 =
  3. 3.297 − 19 =
  4. 4.522 − 37 =
  5. 5.161 − 79 =
  6. 6.91 − 37 =
  7. 7.100 − 17 =
  8. 8.64 − 37 =
  9. 9.249 − 27 =
  10. 10.538 − 27 =
  11. 11.426 − 79 =
  12. 12.549 − 59 =
  13. 13.192 − 49 =
  14. 14.523 − 88 =
  15. 15.540 − 58 =
  16. 16.549 − 77 =
  17. 17.492 − 36 =
  18. 18.338 − 38 =
  19. 19.298 − 27 =
  20. 20.471 − 77 =
  21. 21.172 − 99 =
  22. 22.455 − 39 =
  23. 23.334 − 48 =
  24. 24.553 − 78 =
  25. 25.296 − 79 =
  26. 26.179 − 36 =
  27. 27.541 − 96 =
  28. 28.379 − 76 =
  29. 29.432 − 49 =
  30. 30.572 − 18 =
  31. 31.130 − 26 =
  32. 32.198 − 16 =
  33. 33.288 − 37 =
  34. 34.200 − 36 =
  35. 35.230 − 29 =
  36. 36.196 − 96 =
  37. 37.406 − 79 =
  38. 38.77 − 37 =
  39. 39.153 − 96 =
  40. 40.181 − 59 =

Answer key

  1. 209
  2. 51
  3. 278
  4. 485
  5. 82
  6. 54
  7. 83
  8. 27
  9. 222
  10. 511
  11. 347
  12. 490
  13. 143
  14. 435
  15. 482
  16. 472
  17. 456
  18. 300
  19. 271
  20. 394
  21. 73
  22. 416
  23. 286
  24. 475
  25. 217
  26. 143
  27. 445
  28. 303
  29. 383
  30. 554
  31. 104
  32. 182
  33. 251
  34. 164
  35. 201
  36. 100
  37. 327
  38. 40
  39. 57
  40. 122

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