← Same-change subtraction lesson New set →

Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 553 · 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. 1.185 − 88 =
  2. 2.161 − 69 =
  3. 3.176 − 97 =
  4. 4.538 − 88 =
  5. 5.234 − 68 =
  6. 6.561 − 77 =
  7. 7.122 − 39 =
  8. 8.449 − 36 =
  9. 9.483 − 99 =
  10. 10.252 − 67 =
  11. 11.300 − 17 =
  12. 12.79 − 56 =
  13. 13.410 − 56 =
  14. 14.368 − 48 =
  15. 15.243 − 78 =
  16. 16.520 − 48 =
  17. 17.123 − 29 =
  18. 18.460 − 68 =
  19. 19.464 − 38 =
  20. 20.570 − 59 =
  21. 21.128 − 76 =
  22. 22.433 − 28 =
  23. 23.58 − 16 =
  24. 24.507 − 26 =
  25. 25.135 − 98 =
  26. 26.559 − 69 =
  27. 27.387 − 87 =
  28. 28.518 − 16 =
  29. 29.267 − 56 =
  30. 30.198 − 48 =
  31. 31.109 − 77 =
  32. 32.236 − 28 =
  33. 33.167 − 88 =
  34. 34.526 − 78 =
  35. 35.308 − 26 =
  36. 36.317 − 69 =
  37. 37.459 − 28 =
  38. 38.173 − 28 =
  39. 39.63 − 16 =
  40. 40.231 − 88 =

Answer key

  1. 97
  2. 92
  3. 79
  4. 450
  5. 166
  6. 484
  7. 83
  8. 413
  9. 384
  10. 185
  11. 283
  12. 23
  13. 354
  14. 320
  15. 165
  16. 472
  17. 94
  18. 392
  19. 426
  20. 511
  21. 52
  22. 405
  23. 42
  24. 481
  25. 37
  26. 490
  27. 300
  28. 502
  29. 211
  30. 150
  31. 32
  32. 208
  33. 79
  34. 448
  35. 282
  36. 248
  37. 431
  38. 145
  39. 47
  40. 143

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