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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 756 · 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. 1.313 − 279 =
  2. 2.301 − 278 =
  3. 3.84 − 63 =
  4. 4.505 − 496 =
  5. 5.308 − 295 =
  6. 6.80 − 35 =
  7. 7.230 − 191 =
  8. 8.225 − 175 =
  9. 9.530 − 491 =
  10. 10.326 − 287 =
  11. 11.214 − 176 =
  12. 12.1001 − 983 =
  13. 13.97 − 68 =
  14. 14.96 − 73 =
  15. 15.1029 − 978 =
  16. 16.1004 − 987 =
  17. 17.203 − 180 =
  18. 18.124 − 97 =
  19. 19.509 − 489 =
  20. 20.126 − 84 =
  21. 21.1025 − 977 =
  22. 22.229 − 175 =
  23. 23.97 − 78 =
  24. 24.83 − 72 =
  25. 25.1001 − 978 =
  26. 26.526 − 477 =
  27. 27.126 − 87 =
  28. 28.52 − 44 =
  29. 29.111 − 89 =
  30. 30.111 − 86 =
  31. 31.106 − 68 =
  32. 32.61 − 35 =
  33. 33.79 − 28 =
  34. 34.123 − 82 =
  35. 35.227 − 186 =
  36. 36.127 − 89 =
  37. 37.525 − 485 =
  38. 38.89 − 74 =
  39. 39.124 − 96 =
  40. 40.83 − 58 =

Answer key

  1. 34
  2. 23
  3. 21
  4. 9
  5. 13
  6. 45
  7. 39
  8. 50
  9. 39
  10. 39
  11. 38
  12. 18
  13. 29
  14. 23
  15. 51
  16. 17
  17. 23
  18. 27
  19. 20
  20. 42
  21. 48
  22. 54
  23. 19
  24. 11
  25. 23
  26. 49
  27. 39
  28. 8
  29. 22
  30. 25
  31. 38
  32. 26
  33. 51
  34. 41
  35. 41
  36. 38
  37. 40
  38. 15
  39. 28
  40. 25

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