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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 194 · 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. 1.85 − 74 =
  2. 2.1005 − 998 =
  3. 3.302 − 289 =
  4. 4.1017 − 993 =
  5. 5.127 − 84 =
  6. 6.113 − 94 =
  7. 7.81 − 72 =
  8. 8.1005 − 988 =
  9. 9.1008 − 979 =
  10. 10.502 − 490 =
  11. 11.1028 − 984 =
  12. 12.128 − 77 =
  13. 13.205 − 188 =
  14. 14.87 − 65 =
  15. 15.64 − 37 =
  16. 16.213 − 197 =
  17. 17.312 − 290 =
  18. 18.126 − 75 =
  19. 19.320 − 276 =
  20. 20.1013 − 976 =
  21. 21.129 − 83 =
  22. 22.530 − 480 =
  23. 23.303 − 275 =
  24. 24.114 − 81 =
  25. 25.98 − 65 =
  26. 26.223 − 195 =
  27. 27.110 − 82 =
  28. 28.110 − 70 =
  29. 29.95 − 64 =
  30. 30.515 − 480 =
  31. 31.222 − 184 =
  32. 32.105 − 96 =
  33. 33.70 − 43 =
  34. 34.1006 − 993 =
  35. 35.208 − 196 =
  36. 36.60 − 29 =
  37. 37.69 − 44 =
  38. 38.1007 − 987 =
  39. 39.318 − 293 =
  40. 40.323 − 289 =

Answer key

  1. 11
  2. 7
  3. 13
  4. 24
  5. 43
  6. 19
  7. 9
  8. 17
  9. 29
  10. 12
  11. 44
  12. 51
  13. 17
  14. 22
  15. 27
  16. 16
  17. 22
  18. 51
  19. 44
  20. 37
  21. 46
  22. 50
  23. 28
  24. 33
  25. 33
  26. 28
  27. 28
  28. 40
  29. 31
  30. 35
  31. 38
  32. 9
  33. 27
  34. 13
  35. 12
  36. 31
  37. 25
  38. 20
  39. 25
  40. 34

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