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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 16 · 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. 1.90 − 69 =
  2. 2.90 − 60 =
  3. 3.306 − 279 =
  4. 4.104 − 72 =
  5. 5.511 − 498 =
  6. 6.62 − 46 =
  7. 7.81 − 71 =
  8. 8.225 − 189 =
  9. 9.1017 − 982 =
  10. 10.67 − 35 =
  11. 11.107 − 83 =
  12. 12.98 − 68 =
  13. 13.210 − 180 =
  14. 14.1002 − 995 =
  15. 15.69 − 34 =
  16. 16.69 − 42 =
  17. 17.1012 − 993 =
  18. 18.518 − 475 =
  19. 19.57 − 31 =
  20. 20.101 − 78 =
  21. 21.105 − 78 =
  22. 22.508 − 490 =
  23. 23.1012 − 998 =
  24. 24.1004 − 977 =
  25. 25.100 − 57 =
  26. 26.103 − 68 =
  27. 27.86 − 77 =
  28. 28.79 − 37 =
  29. 29.510 − 484 =
  30. 30.95 − 78 =
  31. 31.506 − 493 =
  32. 32.107 − 90 =
  33. 33.511 − 478 =
  34. 34.1029 − 987 =
  35. 35.1011 − 983 =
  36. 36.520 − 495 =
  37. 37.204 − 177 =
  38. 38.328 − 291 =
  39. 39.310 − 295 =
  40. 40.80 − 46 =

Answer key

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

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