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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 577 · 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. 1.1007 − 978 =
  2. 2.103 − 81 =
  3. 3.122 − 84 =
  4. 4.108 − 81 =
  5. 5.1008 − 978 =
  6. 6.115 − 75 =
  7. 7.201 − 193 =
  8. 8.93 − 73 =
  9. 9.204 − 184 =
  10. 10.85 − 70 =
  11. 11.208 − 189 =
  12. 12.212 − 193 =
  13. 13.1026 − 985 =
  14. 14.62 − 34 =
  15. 15.320 − 286 =
  16. 16.527 − 493 =
  17. 17.218 − 178 =
  18. 18.222 − 181 =
  19. 19.99 − 61 =
  20. 20.314 − 284 =
  21. 21.315 − 286 =
  22. 22.317 − 278 =
  23. 23.129 − 79 =
  24. 24.64 − 28 =
  25. 25.323 − 277 =
  26. 26.100 − 71 =
  27. 27.75 − 40 =
  28. 28.54 − 41 =
  29. 29.515 − 496 =
  30. 30.1026 − 975 =
  31. 31.320 − 282 =
  32. 32.528 − 490 =
  33. 33.58 − 48 =
  34. 34.125 − 85 =
  35. 35.88 − 58 =
  36. 36.59 − 35 =
  37. 37.506 − 490 =
  38. 38.1001 − 980 =
  39. 39.512 − 494 =
  40. 40.229 − 190 =

Answer key

  1. 29
  2. 22
  3. 38
  4. 27
  5. 30
  6. 40
  7. 8
  8. 20
  9. 20
  10. 15
  11. 19
  12. 19
  13. 41
  14. 28
  15. 34
  16. 34
  17. 40
  18. 41
  19. 38
  20. 30
  21. 29
  22. 39
  23. 50
  24. 36
  25. 46
  26. 29
  27. 35
  28. 13
  29. 19
  30. 51
  31. 38
  32. 38
  33. 10
  34. 40
  35. 30
  36. 24
  37. 16
  38. 21
  39. 18
  40. 39

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