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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 955 · 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. 1.1010 − 994 =
  2. 2.1019 − 987 =
  3. 3.1027 − 995 =
  4. 4.513 − 491 =
  5. 5.109 − 58 =
  6. 6.54 − 45 =
  7. 7.305 − 277 =
  8. 8.71 − 34 =
  9. 9.315 − 276 =
  10. 10.128 − 86 =
  11. 11.218 − 180 =
  12. 12.110 − 96 =
  13. 13.122 − 97 =
  14. 14.83 − 62 =
  15. 15.97 − 75 =
  16. 16.103 − 79 =
  17. 17.218 − 195 =
  18. 18.501 − 476 =
  19. 19.67 − 37 =
  20. 20.1012 − 989 =
  21. 21.313 − 284 =
  22. 22.127 − 94 =
  23. 23.529 − 484 =
  24. 24.124 − 94 =
  25. 25.101 − 59 =
  26. 26.68 − 44 =
  27. 27.325 − 278 =
  28. 28.77 − 45 =
  29. 29.309 − 290 =
  30. 30.82 − 73 =
  31. 31.501 − 494 =
  32. 32.505 − 497 =
  33. 33.322 − 291 =
  34. 34.62 − 25 =
  35. 35.512 − 491 =
  36. 36.110 − 76 =
  37. 37.90 − 66 =
  38. 38.1019 − 981 =
  39. 39.325 − 282 =
  40. 40.328 − 287 =

Answer key

  1. 16
  2. 32
  3. 32
  4. 22
  5. 51
  6. 9
  7. 28
  8. 37
  9. 39
  10. 42
  11. 38
  12. 14
  13. 25
  14. 21
  15. 22
  16. 24
  17. 23
  18. 25
  19. 30
  20. 23
  21. 29
  22. 33
  23. 45
  24. 30
  25. 42
  26. 24
  27. 47
  28. 32
  29. 19
  30. 9
  31. 7
  32. 8
  33. 31
  34. 37
  35. 21
  36. 34
  37. 24
  38. 38
  39. 43
  40. 41

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