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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 708 · 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. 1.101 − 94 =
  2. 2.211 − 184 =
  3. 3.310 − 280 =
  4. 4.121 − 78 =
  5. 5.323 − 292 =
  6. 6.205 − 178 =
  7. 7.504 − 485 =
  8. 8.103 − 59 =
  9. 9.67 − 29 =
  10. 10.118 − 87 =
  11. 11.68 − 42 =
  12. 12.80 − 42 =
  13. 13.1002 − 981 =
  14. 14.64 − 39 =
  15. 15.307 − 297 =
  16. 16.1006 − 991 =
  17. 17.309 − 285 =
  18. 18.105 − 56 =
  19. 19.85 − 75 =
  20. 20.223 − 190 =
  21. 21.1023 − 977 =
  22. 22.104 − 65 =
  23. 23.224 − 198 =
  24. 24.91 − 69 =
  25. 25.1011 − 997 =
  26. 26.128 − 80 =
  27. 27.112 − 92 =
  28. 28.105 − 77 =
  29. 29.218 − 182 =
  30. 30.1029 − 994 =
  31. 31.68 − 43 =
  32. 32.201 − 189 =
  33. 33.225 − 181 =
  34. 34.97 − 56 =
  35. 35.1014 − 991 =
  36. 36.78 − 35 =
  37. 37.211 − 178 =
  38. 38.302 − 275 =
  39. 39.1029 − 988 =
  40. 40.222 − 196 =

Answer key

  1. 7
  2. 27
  3. 30
  4. 43
  5. 31
  6. 27
  7. 19
  8. 44
  9. 38
  10. 31
  11. 26
  12. 38
  13. 21
  14. 25
  15. 10
  16. 15
  17. 24
  18. 49
  19. 10
  20. 33
  21. 46
  22. 39
  23. 26
  24. 22
  25. 14
  26. 48
  27. 20
  28. 28
  29. 36
  30. 35
  31. 25
  32. 12
  33. 44
  34. 41
  35. 23
  36. 43
  37. 33
  38. 27
  39. 41
  40. 26

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