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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 93 · 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. 1.80 − 27 =
  2. 2.71 − 45 =
  3. 3.96 − 73 =
  4. 4.104 − 96 =
  5. 5.68 − 46 =
  6. 6.104 − 87 =
  7. 7.517 − 493 =
  8. 8.55 − 40 =
  9. 9.214 − 180 =
  10. 10.1003 − 978 =
  11. 11.52 − 48 =
  12. 12.57 − 34 =
  13. 13.1030 − 986 =
  14. 14.104 − 79 =
  15. 15.218 − 188 =
  16. 16.85 − 59 =
  17. 17.1007 − 975 =
  18. 18.507 − 495 =
  19. 19.84 − 57 =
  20. 20.113 − 86 =
  21. 21.203 − 176 =
  22. 22.111 − 98 =
  23. 23.1027 − 982 =
  24. 24.523 − 491 =
  25. 25.508 − 496 =
  26. 26.210 − 178 =
  27. 27.109 − 89 =
  28. 28.1006 − 979 =
  29. 29.79 − 40 =
  30. 30.64 − 42 =
  31. 31.1025 − 980 =
  32. 32.1023 − 989 =
  33. 33.58 − 43 =
  34. 34.230 − 187 =
  35. 35.64 − 27 =
  36. 36.86 − 69 =
  37. 37.59 − 31 =
  38. 38.82 − 60 =
  39. 39.54 − 44 =
  40. 40.85 − 55 =

Answer key

  1. 53
  2. 26
  3. 23
  4. 8
  5. 22
  6. 17
  7. 24
  8. 15
  9. 34
  10. 25
  11. 4
  12. 23
  13. 44
  14. 25
  15. 30
  16. 26
  17. 32
  18. 12
  19. 27
  20. 27
  21. 27
  22. 13
  23. 45
  24. 32
  25. 12
  26. 32
  27. 20
  28. 27
  29. 39
  30. 22
  31. 45
  32. 34
  33. 15
  34. 43
  35. 37
  36. 17
  37. 28
  38. 22
  39. 10
  40. 30

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