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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 889 · 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. 1.106 − 86 =
  2. 2.1013 − 994 =
  3. 3.73 − 27 =
  4. 4.82 − 77 =
  5. 5.311 − 292 =
  6. 6.1030 − 995 =
  7. 7.106 − 77 =
  8. 8.1002 − 992 =
  9. 9.303 − 281 =
  10. 10.105 − 81 =
  11. 11.201 − 182 =
  12. 12.81 − 77 =
  13. 13.112 − 75 =
  14. 14.106 − 97 =
  15. 15.519 − 486 =
  16. 16.224 − 187 =
  17. 17.74 − 33 =
  18. 18.116 − 95 =
  19. 19.99 − 58 =
  20. 20.1010 − 995 =
  21. 21.1014 − 976 =
  22. 22.207 − 177 =
  23. 23.107 − 82 =
  24. 24.95 − 57 =
  25. 25.312 − 281 =
  26. 26.106 − 91 =
  27. 27.519 − 483 =
  28. 28.1013 − 978 =
  29. 29.308 − 284 =
  30. 30.123 − 79 =
  31. 31.208 − 186 =
  32. 32.130 − 91 =
  33. 33.121 − 90 =
  34. 34.301 − 280 =
  35. 35.107 − 56 =
  36. 36.106 − 93 =
  37. 37.1022 − 995 =
  38. 38.208 − 188 =
  39. 39.507 − 497 =
  40. 40.206 − 176 =

Answer key

  1. 20
  2. 19
  3. 46
  4. 5
  5. 19
  6. 35
  7. 29
  8. 10
  9. 22
  10. 24
  11. 19
  12. 4
  13. 37
  14. 9
  15. 33
  16. 37
  17. 41
  18. 21
  19. 41
  20. 15
  21. 38
  22. 30
  23. 25
  24. 38
  25. 31
  26. 15
  27. 36
  28. 35
  29. 24
  30. 44
  31. 22
  32. 39
  33. 31
  34. 21
  35. 51
  36. 13
  37. 27
  38. 20
  39. 10
  40. 30

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