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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 170 · 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. 1.77 − 40 =
  2. 2.105 − 96 =
  3. 3.100 − 67 =
  4. 4.1020 − 977 =
  5. 5.60 − 26 =
  6. 6.1002 − 980 =
  7. 7.310 − 277 =
  8. 8.102 − 79 =
  9. 9.106 − 71 =
  10. 10.516 − 498 =
  11. 11.503 − 476 =
  12. 12.99 − 75 =
  13. 13.73 − 28 =
  14. 14.106 − 81 =
  15. 15.1008 − 997 =
  16. 16.311 − 290 =
  17. 17.1007 − 986 =
  18. 18.1014 − 975 =
  19. 19.215 − 189 =
  20. 20.1015 − 996 =
  21. 21.221 − 183 =
  22. 22.103 − 69 =
  23. 23.224 − 184 =
  24. 24.87 − 70 =
  25. 25.316 − 296 =
  26. 26.117 − 76 =
  27. 27.96 − 60 =
  28. 28.316 − 288 =
  29. 29.73 − 48 =
  30. 30.113 − 78 =
  31. 31.74 − 33 =
  32. 32.58 − 41 =
  33. 33.94 − 69 =
  34. 34.119 − 77 =
  35. 35.221 − 197 =
  36. 36.56 − 47 =
  37. 37.524 − 496 =
  38. 38.229 − 194 =
  39. 39.118 − 89 =
  40. 40.1018 − 997 =

Answer key

  1. 37
  2. 9
  3. 33
  4. 43
  5. 34
  6. 22
  7. 33
  8. 23
  9. 35
  10. 18
  11. 27
  12. 24
  13. 45
  14. 25
  15. 11
  16. 21
  17. 21
  18. 39
  19. 26
  20. 19
  21. 38
  22. 34
  23. 40
  24. 17
  25. 20
  26. 41
  27. 36
  28. 28
  29. 25
  30. 35
  31. 41
  32. 17
  33. 25
  34. 42
  35. 24
  36. 9
  37. 28
  38. 35
  39. 29
  40. 21

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