← Same-change subtraction lesson New set →

Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 673 · 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. 1.424 − 16 =
  2. 2.159 − 99 =
  3. 3.61 − 27 =
  4. 4.370 − 49 =
  5. 5.274 − 26 =
  6. 6.99 − 69 =
  7. 7.561 − 56 =
  8. 8.188 − 16 =
  9. 9.322 − 39 =
  10. 10.452 − 17 =
  11. 11.174 − 89 =
  12. 12.167 − 68 =
  13. 13.54 − 47 =
  14. 14.490 − 67 =
  15. 15.149 − 38 =
  16. 16.392 − 16 =
  17. 17.523 − 56 =
  18. 18.593 − 99 =
  19. 19.214 − 57 =
  20. 20.189 − 66 =
  21. 21.294 − 48 =
  22. 22.192 − 27 =
  23. 23.208 − 26 =
  24. 24.209 − 17 =
  25. 25.97 − 38 =
  26. 26.505 − 96 =
  27. 27.70 − 69 =
  28. 28.441 − 68 =
  29. 29.231 − 29 =
  30. 30.162 − 18 =
  31. 31.245 − 36 =
  32. 32.171 − 38 =
  33. 33.425 − 17 =
  34. 34.399 − 28 =
  35. 35.143 − 47 =
  36. 36.197 − 27 =
  37. 37.342 − 98 =
  38. 38.518 − 77 =
  39. 39.132 − 66 =
  40. 40.401 − 86 =

Answer key

  1. 408
  2. 60
  3. 34
  4. 321
  5. 248
  6. 30
  7. 505
  8. 172
  9. 283
  10. 435
  11. 85
  12. 99
  13. 7
  14. 423
  15. 111
  16. 376
  17. 467
  18. 494
  19. 157
  20. 123
  21. 246
  22. 165
  23. 182
  24. 192
  25. 59
  26. 409
  27. 1
  28. 373
  29. 202
  30. 144
  31. 209
  32. 133
  33. 408
  34. 371
  35. 96
  36. 170
  37. 244
  38. 441
  39. 66
  40. 315

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