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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 359 · 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. 1.56 − 44 =
  2. 2.110 − 98 =
  3. 3.1020 − 977 =
  4. 4.94 − 63 =
  5. 5.317 − 295 =
  6. 6.303 − 289 =
  7. 7.103 − 93 =
  8. 8.302 − 285 =
  9. 9.1023 − 981 =
  10. 10.1024 − 992 =
  11. 11.88 − 76 =
  12. 12.55 − 46 =
  13. 13.503 − 483 =
  14. 14.1024 − 994 =
  15. 15.206 − 176 =
  16. 16.225 − 175 =
  17. 17.225 − 198 =
  18. 18.64 − 43 =
  19. 19.106 − 76 =
  20. 20.1016 − 994 =
  21. 21.1006 − 995 =
  22. 22.89 − 77 =
  23. 23.107 − 95 =
  24. 24.115 − 79 =
  25. 25.503 − 487 =
  26. 26.107 − 90 =
  27. 27.87 − 74 =
  28. 28.124 − 79 =
  29. 29.107 − 67 =
  30. 30.323 − 294 =
  31. 31.312 − 298 =
  32. 32.130 − 86 =
  33. 33.101 − 84 =
  34. 34.317 − 286 =
  35. 35.203 − 191 =
  36. 36.102 − 67 =
  37. 37.516 − 486 =
  38. 38.203 − 192 =
  39. 39.86 − 73 =
  40. 40.51 − 27 =

Answer key

  1. 12
  2. 12
  3. 43
  4. 31
  5. 22
  6. 14
  7. 10
  8. 17
  9. 42
  10. 32
  11. 12
  12. 9
  13. 20
  14. 30
  15. 30
  16. 50
  17. 27
  18. 21
  19. 30
  20. 22
  21. 11
  22. 12
  23. 12
  24. 36
  25. 16
  26. 17
  27. 13
  28. 45
  29. 40
  30. 29
  31. 14
  32. 44
  33. 17
  34. 31
  35. 12
  36. 35
  37. 30
  38. 11
  39. 13
  40. 24

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