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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 722 · 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. 1.94 − 70 =
  2. 2.84 − 78 =
  3. 3.307 − 286 =
  4. 4.328 − 295 =
  5. 5.1003 − 991 =
  6. 6.69 − 45 =
  7. 7.114 − 94 =
  8. 8.130 − 85 =
  9. 9.523 − 487 =
  10. 10.72 − 44 =
  11. 11.1027 − 980 =
  12. 12.226 − 181 =
  13. 13.53 − 39 =
  14. 14.1023 − 989 =
  15. 15.102 − 74 =
  16. 16.207 − 178 =
  17. 17.61 − 47 =
  18. 18.506 − 493 =
  19. 19.510 − 487 =
  20. 20.71 − 27 =
  21. 21.1003 − 995 =
  22. 22.208 − 177 =
  23. 23.203 − 187 =
  24. 24.69 − 25 =
  25. 25.86 − 69 =
  26. 26.103 − 63 =
  27. 27.64 − 25 =
  28. 28.92 − 55 =
  29. 29.202 − 189 =
  30. 30.101 − 91 =
  31. 31.508 − 475 =
  32. 32.58 − 40 =
  33. 33.109 − 75 =
  34. 34.74 − 32 =
  35. 35.123 − 75 =
  36. 36.312 − 283 =
  37. 37.1006 − 993 =
  38. 38.518 − 495 =
  39. 39.73 − 32 =
  40. 40.508 − 496 =

Answer key

  1. 24
  2. 6
  3. 21
  4. 33
  5. 12
  6. 24
  7. 20
  8. 45
  9. 36
  10. 28
  11. 47
  12. 45
  13. 14
  14. 34
  15. 28
  16. 29
  17. 14
  18. 13
  19. 23
  20. 44
  21. 8
  22. 31
  23. 16
  24. 44
  25. 17
  26. 40
  27. 39
  28. 37
  29. 13
  30. 10
  31. 33
  32. 18
  33. 34
  34. 42
  35. 48
  36. 29
  37. 13
  38. 23
  39. 41
  40. 12

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