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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 924 · 40 questions
TalentJR

How to do it in your head (Count up): Start at the smaller number. Jump to the next ten, then the next hundred, then to the bigger number. Add up all the jumps.

NameDateTime takenScore ___ / 40
  1. 1.302 − 281 =
  2. 2.211 − 179 =
  3. 3.103 − 79 =
  4. 4.209 − 192 =
  5. 5.1014 − 991 =
  6. 6.87 − 57 =
  7. 7.126 − 98 =
  8. 8.82 − 75 =
  9. 9.201 − 183 =
  10. 10.319 − 296 =
  11. 11.112 − 87 =
  12. 12.528 − 489 =
  13. 13.304 − 290 =
  14. 14.517 − 477 =
  15. 15.1009 − 982 =
  16. 16.1010 − 981 =
  17. 17.83 − 76 =
  18. 18.307 − 275 =
  19. 19.308 − 279 =
  20. 20.99 − 68 =
  21. 21.204 − 178 =
  22. 22.221 − 185 =
  23. 23.520 − 484 =
  24. 24.120 − 81 =
  25. 25.511 − 486 =
  26. 26.310 − 288 =
  27. 27.78 − 38 =
  28. 28.53 − 40 =
  29. 29.230 − 188 =
  30. 30.326 − 276 =
  31. 31.307 − 291 =
  32. 32.106 − 92 =
  33. 33.509 − 492 =
  34. 34.512 − 497 =
  35. 35.228 − 197 =
  36. 36.216 − 188 =
  37. 37.503 − 489 =
  38. 38.219 − 176 =
  39. 39.61 − 28 =
  40. 40.508 − 496 =

Answer key

  1. 21
  2. 32
  3. 24
  4. 17
  5. 23
  6. 30
  7. 28
  8. 7
  9. 18
  10. 23
  11. 25
  12. 39
  13. 14
  14. 40
  15. 27
  16. 29
  17. 7
  18. 32
  19. 29
  20. 31
  21. 26
  22. 36
  23. 36
  24. 39
  25. 25
  26. 22
  27. 40
  28. 13
  29. 42
  30. 50
  31. 16
  32. 14
  33. 17
  34. 15
  35. 31
  36. 28
  37. 14
  38. 43
  39. 33
  40. 12

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