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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 909 · 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. 1.112 − 84 =
  2. 2.309 − 284 =
  3. 3.62 − 39 =
  4. 4.1001 − 976 =
  5. 5.52 − 30 =
  6. 6.61 − 32 =
  7. 7.102 − 68 =
  8. 8.103 − 97 =
  9. 9.101 − 74 =
  10. 10.1022 − 995 =
  11. 11.80 − 26 =
  12. 12.63 − 43 =
  13. 13.89 − 63 =
  14. 14.55 − 43 =
  15. 15.103 − 93 =
  16. 16.85 − 65 =
  17. 17.84 − 73 =
  18. 18.516 − 484 =
  19. 19.130 − 96 =
  20. 20.530 − 477 =
  21. 21.523 − 475 =
  22. 22.129 − 85 =
  23. 23.125 − 75 =
  24. 24.82 − 59 =
  25. 25.527 − 476 =
  26. 26.128 − 96 =
  27. 27.1020 − 975 =
  28. 28.65 − 46 =
  29. 29.1016 − 979 =
  30. 30.212 − 193 =
  31. 31.71 − 31 =
  32. 32.217 − 188 =
  33. 33.110 − 62 =
  34. 34.310 − 278 =
  35. 35.1027 − 982 =
  36. 36.71 − 47 =
  37. 37.1015 − 986 =
  38. 38.516 − 481 =
  39. 39.322 − 275 =
  40. 40.1025 − 978 =

Answer key

  1. 28
  2. 25
  3. 23
  4. 25
  5. 22
  6. 29
  7. 34
  8. 6
  9. 27
  10. 27
  11. 54
  12. 20
  13. 26
  14. 12
  15. 10
  16. 20
  17. 11
  18. 32
  19. 34
  20. 53
  21. 48
  22. 44
  23. 50
  24. 23
  25. 51
  26. 32
  27. 45
  28. 19
  29. 37
  30. 19
  31. 40
  32. 29
  33. 48
  34. 32
  35. 45
  36. 24
  37. 29
  38. 35
  39. 47
  40. 47

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