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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 603 · 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. 1.210 − 185 =
  2. 2.106 − 82 =
  3. 3.1004 − 994 =
  4. 4.202 − 195 =
  5. 5.1010 − 994 =
  6. 6.71 − 25 =
  7. 7.103 − 79 =
  8. 8.112 − 93 =
  9. 9.518 − 476 =
  10. 10.1027 − 992 =
  11. 11.127 − 93 =
  12. 12.1003 − 977 =
  13. 13.90 − 64 =
  14. 14.74 − 43 =
  15. 15.64 − 39 =
  16. 16.116 − 80 =
  17. 17.103 − 90 =
  18. 18.61 − 46 =
  19. 19.313 − 297 =
  20. 20.306 − 289 =
  21. 21.525 − 494 =
  22. 22.207 − 194 =
  23. 23.59 − 46 =
  24. 24.315 − 293 =
  25. 25.75 − 48 =
  26. 26.1004 − 997 =
  27. 27.1018 − 998 =
  28. 28.323 − 287 =
  29. 29.58 − 30 =
  30. 30.1008 − 989 =
  31. 31.1021 − 987 =
  32. 32.330 − 289 =
  33. 33.230 − 194 =
  34. 34.66 − 45 =
  35. 35.220 − 188 =
  36. 36.1013 − 980 =
  37. 37.91 − 62 =
  38. 38.99 − 77 =
  39. 39.528 − 477 =
  40. 40.511 − 477 =

Answer key

  1. 25
  2. 24
  3. 10
  4. 7
  5. 16
  6. 46
  7. 24
  8. 19
  9. 42
  10. 35
  11. 34
  12. 26
  13. 26
  14. 31
  15. 25
  16. 36
  17. 13
  18. 15
  19. 16
  20. 17
  21. 31
  22. 13
  23. 13
  24. 22
  25. 27
  26. 7
  27. 20
  28. 36
  29. 28
  30. 19
  31. 34
  32. 41
  33. 36
  34. 21
  35. 32
  36. 33
  37. 29
  38. 22
  39. 51
  40. 34

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