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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 893 · 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. 1.211 − 177 =
  2. 2.1003 − 996 =
  3. 3.1023 − 998 =
  4. 4.1027 − 993 =
  5. 5.213 − 189 =
  6. 6.1001 − 980 =
  7. 7.313 − 288 =
  8. 8.104 − 71 =
  9. 9.55 − 47 =
  10. 10.229 − 198 =
  11. 11.510 − 484 =
  12. 12.101 − 75 =
  13. 13.102 − 96 =
  14. 14.93 − 72 =
  15. 15.302 − 293 =
  16. 16.1015 − 995 =
  17. 17.317 − 275 =
  18. 18.515 − 475 =
  19. 19.301 − 291 =
  20. 20.319 − 281 =
  21. 21.104 − 65 =
  22. 22.63 − 37 =
  23. 23.530 − 476 =
  24. 24.81 − 71 =
  25. 25.91 − 55 =
  26. 26.228 − 194 =
  27. 27.326 − 288 =
  28. 28.86 − 57 =
  29. 29.218 − 194 =
  30. 30.505 − 482 =
  31. 31.95 − 68 =
  32. 32.503 − 483 =
  33. 33.516 − 491 =
  34. 34.1002 − 989 =
  35. 35.302 − 276 =
  36. 36.107 − 58 =
  37. 37.104 − 87 =
  38. 38.94 − 59 =
  39. 39.519 − 497 =
  40. 40.228 − 187 =

Answer key

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

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