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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 650 · 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. 1.64 − 48 =
  2. 2.510 − 498 =
  3. 3.313 − 291 =
  4. 4.85 − 55 =
  5. 5.127 − 77 =
  6. 6.321 − 289 =
  7. 7.54 − 41 =
  8. 8.126 − 86 =
  9. 9.201 − 197 =
  10. 10.67 − 37 =
  11. 11.53 − 29 =
  12. 12.1003 − 989 =
  13. 13.1019 − 979 =
  14. 14.58 − 34 =
  15. 15.84 − 69 =
  16. 16.525 − 487 =
  17. 17.119 − 84 =
  18. 18.301 − 285 =
  19. 19.74 − 38 =
  20. 20.57 − 25 =
  21. 21.55 − 35 =
  22. 22.514 − 493 =
  23. 23.77 − 28 =
  24. 24.519 − 484 =
  25. 25.92 − 65 =
  26. 26.218 − 194 =
  27. 27.1016 − 976 =
  28. 28.208 − 194 =
  29. 29.310 − 277 =
  30. 30.94 − 68 =
  31. 31.1017 − 998 =
  32. 32.1011 − 978 =
  33. 33.117 − 77 =
  34. 34.114 − 98 =
  35. 35.88 − 77 =
  36. 36.90 − 77 =
  37. 37.108 − 80 =
  38. 38.81 − 67 =
  39. 39.1011 − 987 =
  40. 40.64 − 37 =

Answer key

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

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