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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 109 · 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. 1.69 − 32 =
  2. 2.121 − 88 =
  3. 3.1028 − 986 =
  4. 4.327 − 294 =
  5. 5.508 − 498 =
  6. 6.103 − 67 =
  7. 7.1006 − 997 =
  8. 8.204 − 191 =
  9. 9.1029 − 983 =
  10. 10.1016 − 993 =
  11. 11.55 − 35 =
  12. 12.118 − 79 =
  13. 13.120 − 92 =
  14. 14.1026 − 993 =
  15. 15.224 − 179 =
  16. 16.1018 − 995 =
  17. 17.94 − 60 =
  18. 18.504 − 476 =
  19. 19.61 − 45 =
  20. 20.71 − 36 =
  21. 21.308 − 288 =
  22. 22.1010 − 982 =
  23. 23.109 − 97 =
  24. 24.83 − 73 =
  25. 25.85 − 76 =
  26. 26.111 − 83 =
  27. 27.325 − 298 =
  28. 28.1001 − 977 =
  29. 29.221 − 182 =
  30. 30.102 − 75 =
  31. 31.305 − 293 =
  32. 32.101 − 95 =
  33. 33.224 − 178 =
  34. 34.310 − 281 =
  35. 35.1026 − 982 =
  36. 36.61 − 29 =
  37. 37.1022 − 986 =
  38. 38.207 − 179 =
  39. 39.65 − 44 =
  40. 40.1024 − 983 =

Answer key

  1. 37
  2. 33
  3. 42
  4. 33
  5. 10
  6. 36
  7. 9
  8. 13
  9. 46
  10. 23
  11. 20
  12. 39
  13. 28
  14. 33
  15. 45
  16. 23
  17. 34
  18. 28
  19. 16
  20. 35
  21. 20
  22. 28
  23. 12
  24. 10
  25. 9
  26. 28
  27. 27
  28. 24
  29. 39
  30. 27
  31. 12
  32. 6
  33. 46
  34. 29
  35. 44
  36. 32
  37. 36
  38. 28
  39. 21
  40. 41

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