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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 146 · 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. 1.1009 − 992 =
  2. 2.1002 − 995 =
  3. 3.107 − 97 =
  4. 4.65 − 44 =
  5. 5.115 − 94 =
  6. 6.1014 − 977 =
  7. 7.512 − 486 =
  8. 8.314 − 283 =
  9. 9.68 − 41 =
  10. 10.228 − 178 =
  11. 11.53 − 36 =
  12. 12.1009 − 977 =
  13. 13.302 − 281 =
  14. 14.503 − 481 =
  15. 15.223 − 197 =
  16. 16.524 − 498 =
  17. 17.1014 − 997 =
  18. 18.82 − 62 =
  19. 19.1030 − 994 =
  20. 20.1026 − 987 =
  21. 21.128 − 90 =
  22. 22.80 − 33 =
  23. 23.90 − 63 =
  24. 24.311 − 296 =
  25. 25.205 − 176 =
  26. 26.1005 − 983 =
  27. 27.524 − 490 =
  28. 28.59 − 41 =
  29. 29.115 − 77 =
  30. 30.103 − 73 =
  31. 31.107 − 96 =
  32. 32.502 − 488 =
  33. 33.89 − 78 =
  34. 34.510 − 481 =
  35. 35.110 − 82 =
  36. 36.305 − 297 =
  37. 37.217 − 184 =
  38. 38.503 − 497 =
  39. 39.507 − 479 =
  40. 40.508 − 496 =

Answer key

  1. 17
  2. 7
  3. 10
  4. 21
  5. 21
  6. 37
  7. 26
  8. 31
  9. 27
  10. 50
  11. 17
  12. 32
  13. 21
  14. 22
  15. 26
  16. 26
  17. 17
  18. 20
  19. 36
  20. 39
  21. 38
  22. 47
  23. 27
  24. 15
  25. 29
  26. 22
  27. 34
  28. 18
  29. 38
  30. 30
  31. 11
  32. 14
  33. 11
  34. 29
  35. 28
  36. 8
  37. 33
  38. 6
  39. 28
  40. 12

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