← Same-change subtraction lesson New set →

Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 904 · 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. 1.282 − 59 =
  2. 2.249 − 79 =
  3. 3.417 − 68 =
  4. 4.569 − 37 =
  5. 5.592 − 68 =
  6. 6.156 − 26 =
  7. 7.569 − 16 =
  8. 8.511 − 86 =
  9. 9.120 − 56 =
  10. 10.495 − 69 =
  11. 11.169 − 67 =
  12. 12.141 − 97 =
  13. 13.190 − 76 =
  14. 14.90 − 39 =
  15. 15.354 − 56 =
  16. 16.286 − 39 =
  17. 17.382 − 17 =
  18. 18.105 − 57 =
  19. 19.240 − 76 =
  20. 20.131 − 99 =
  21. 21.354 − 88 =
  22. 22.129 − 29 =
  23. 23.567 − 29 =
  24. 24.105 − 28 =
  25. 25.138 − 67 =
  26. 26.280 − 36 =
  27. 27.389 − 66 =
  28. 28.547 − 66 =
  29. 29.160 − 29 =
  30. 30.573 − 36 =
  31. 31.220 − 67 =
  32. 32.425 − 18 =
  33. 33.196 − 96 =
  34. 34.539 − 27 =
  35. 35.283 − 86 =
  36. 36.379 − 16 =
  37. 37.146 − 16 =
  38. 38.249 − 29 =
  39. 39.481 − 97 =
  40. 40.272 − 57 =

Answer key

  1. 223
  2. 170
  3. 349
  4. 532
  5. 524
  6. 130
  7. 553
  8. 425
  9. 64
  10. 426
  11. 102
  12. 44
  13. 114
  14. 51
  15. 298
  16. 247
  17. 365
  18. 48
  19. 164
  20. 32
  21. 266
  22. 100
  23. 538
  24. 77
  25. 71
  26. 244
  27. 323
  28. 481
  29. 131
  30. 537
  31. 153
  32. 407
  33. 100
  34. 512
  35. 197
  36. 363
  37. 130
  38. 220
  39. 384
  40. 215

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