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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 732 · 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. 1.223 − 185 =
  2. 2.329 − 290 =
  3. 3.69 − 31 =
  4. 4.313 − 275 =
  5. 5.513 − 478 =
  6. 6.502 − 494 =
  7. 7.124 − 96 =
  8. 8.324 − 294 =
  9. 9.64 − 45 =
  10. 10.87 − 67 =
  11. 11.99 − 67 =
  12. 12.79 − 44 =
  13. 13.60 − 48 =
  14. 14.211 − 183 =
  15. 15.518 − 496 =
  16. 16.1011 − 993 =
  17. 17.118 − 87 =
  18. 18.306 − 278 =
  19. 19.95 − 69 =
  20. 20.1023 − 975 =
  21. 21.305 − 280 =
  22. 22.327 − 294 =
  23. 23.122 − 98 =
  24. 24.105 − 94 =
  25. 25.94 − 56 =
  26. 26.86 − 67 =
  27. 27.1015 − 995 =
  28. 28.106 − 64 =
  29. 29.503 − 489 =
  30. 30.330 − 292 =
  31. 31.507 − 478 =
  32. 32.1011 − 995 =
  33. 33.129 − 91 =
  34. 34.207 − 186 =
  35. 35.1018 − 992 =
  36. 36.205 − 185 =
  37. 37.527 − 489 =
  38. 38.95 − 55 =
  39. 39.104 − 91 =
  40. 40.209 − 186 =

Answer key

  1. 38
  2. 39
  3. 38
  4. 38
  5. 35
  6. 8
  7. 28
  8. 30
  9. 19
  10. 20
  11. 32
  12. 35
  13. 12
  14. 28
  15. 22
  16. 18
  17. 31
  18. 28
  19. 26
  20. 48
  21. 25
  22. 33
  23. 24
  24. 11
  25. 38
  26. 19
  27. 20
  28. 42
  29. 14
  30. 38
  31. 29
  32. 16
  33. 38
  34. 21
  35. 26
  36. 20
  37. 38
  38. 40
  39. 13
  40. 23

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