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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 165 · 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. 1.114 − 96 =
  2. 2.209 − 194 =
  3. 3.1011 − 987 =
  4. 4.516 − 484 =
  5. 5.92 − 68 =
  6. 6.1018 − 992 =
  7. 7.123 − 75 =
  8. 8.1023 − 979 =
  9. 9.517 − 498 =
  10. 10.212 − 185 =
  11. 11.220 − 192 =
  12. 12.96 − 74 =
  13. 13.305 − 296 =
  14. 14.101 − 63 =
  15. 15.320 − 290 =
  16. 16.104 − 68 =
  17. 17.84 − 72 =
  18. 18.87 − 74 =
  19. 19.1024 − 984 =
  20. 20.120 − 88 =
  21. 21.52 − 31 =
  22. 22.90 − 72 =
  23. 23.54 − 35 =
  24. 24.1008 − 982 =
  25. 25.130 − 93 =
  26. 26.513 − 486 =
  27. 27.60 − 40 =
  28. 28.1027 − 980 =
  29. 29.318 − 293 =
  30. 30.129 − 89 =
  31. 31.323 − 276 =
  32. 32.201 − 175 =
  33. 33.91 − 75 =
  34. 34.207 − 191 =
  35. 35.81 − 56 =
  36. 36.54 − 37 =
  37. 37.81 − 74 =
  38. 38.315 − 289 =
  39. 39.529 − 493 =
  40. 40.318 − 275 =

Answer key

  1. 18
  2. 15
  3. 24
  4. 32
  5. 24
  6. 26
  7. 48
  8. 44
  9. 19
  10. 27
  11. 28
  12. 22
  13. 9
  14. 38
  15. 30
  16. 36
  17. 12
  18. 13
  19. 40
  20. 32
  21. 21
  22. 18
  23. 19
  24. 26
  25. 37
  26. 27
  27. 20
  28. 47
  29. 25
  30. 40
  31. 47
  32. 26
  33. 16
  34. 16
  35. 25
  36. 17
  37. 7
  38. 26
  39. 36
  40. 43

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