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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 99 · 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. 1.119 − 77 =
  2. 2.107 − 57 =
  3. 3.130 − 77 =
  4. 4.203 − 180 =
  5. 5.315 − 286 =
  6. 6.222 − 179 =
  7. 7.324 − 283 =
  8. 8.1009 − 976 =
  9. 9.1026 − 994 =
  10. 10.1020 − 998 =
  11. 11.1018 − 979 =
  12. 12.311 − 292 =
  13. 13.120 − 84 =
  14. 14.505 − 496 =
  15. 15.116 − 91 =
  16. 16.503 − 496 =
  17. 17.51 − 29 =
  18. 18.328 − 298 =
  19. 19.103 − 85 =
  20. 20.212 − 192 =
  21. 21.1025 − 991 =
  22. 22.1015 − 977 =
  23. 23.52 − 46 =
  24. 24.90 − 58 =
  25. 25.320 − 297 =
  26. 26.210 − 194 =
  27. 27.78 − 47 =
  28. 28.111 − 79 =
  29. 29.88 − 63 =
  30. 30.101 − 68 =
  31. 31.120 − 97 =
  32. 32.102 − 72 =
  33. 33.75 − 37 =
  34. 34.99 − 74 =
  35. 35.314 − 276 =
  36. 36.56 − 39 =
  37. 37.208 − 180 =
  38. 38.88 − 65 =
  39. 39.55 − 34 =
  40. 40.1005 − 978 =

Answer key

  1. 42
  2. 50
  3. 53
  4. 23
  5. 29
  6. 43
  7. 41
  8. 33
  9. 32
  10. 22
  11. 39
  12. 19
  13. 36
  14. 9
  15. 25
  16. 7
  17. 22
  18. 30
  19. 18
  20. 20
  21. 34
  22. 38
  23. 6
  24. 32
  25. 23
  26. 16
  27. 31
  28. 32
  29. 25
  30. 33
  31. 23
  32. 30
  33. 38
  34. 25
  35. 38
  36. 17
  37. 28
  38. 23
  39. 21
  40. 27

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