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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 869 · 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. 1.322 − 278 =
  2. 2.505 − 497 =
  3. 3.76 − 27 =
  4. 4.1004 − 980 =
  5. 5.128 − 96 =
  6. 6.1027 − 988 =
  7. 7.226 − 194 =
  8. 8.73 − 38 =
  9. 9.225 − 193 =
  10. 10.98 − 72 =
  11. 11.100 − 61 =
  12. 12.87 − 75 =
  13. 13.120 − 96 =
  14. 14.1022 − 987 =
  15. 15.61 − 32 =
  16. 16.306 − 277 =
  17. 17.1026 − 980 =
  18. 18.1001 − 993 =
  19. 19.104 − 81 =
  20. 20.70 − 32 =
  21. 21.51 − 25 =
  22. 22.522 − 478 =
  23. 23.1004 − 981 =
  24. 24.307 − 291 =
  25. 25.1002 − 985 =
  26. 26.228 − 180 =
  27. 27.1010 − 997 =
  28. 28.516 − 493 =
  29. 29.210 − 180 =
  30. 30.120 − 80 =
  31. 31.111 − 81 =
  32. 32.215 − 193 =
  33. 33.92 − 58 =
  34. 34.90 − 58 =
  35. 35.124 − 95 =
  36. 36.101 − 88 =
  37. 37.63 − 39 =
  38. 38.82 − 77 =
  39. 39.89 − 60 =
  40. 40.303 − 280 =

Answer key

  1. 44
  2. 8
  3. 49
  4. 24
  5. 32
  6. 39
  7. 32
  8. 35
  9. 32
  10. 26
  11. 39
  12. 12
  13. 24
  14. 35
  15. 29
  16. 29
  17. 46
  18. 8
  19. 23
  20. 38
  21. 26
  22. 44
  23. 23
  24. 16
  25. 17
  26. 48
  27. 13
  28. 23
  29. 30
  30. 40
  31. 30
  32. 22
  33. 34
  34. 32
  35. 29
  36. 13
  37. 24
  38. 5
  39. 29
  40. 23

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