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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 440 · 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. 1.77 − 43 =
  2. 2.519 − 490 =
  3. 3.104 − 92 =
  4. 4.309 − 298 =
  5. 5.55 − 36 =
  6. 6.87 − 74 =
  7. 7.97 − 68 =
  8. 8.1016 − 997 =
  9. 9.1003 − 996 =
  10. 10.100 − 60 =
  11. 11.104 − 78 =
  12. 12.1003 − 995 =
  13. 13.107 − 95 =
  14. 14.87 − 65 =
  15. 15.306 − 292 =
  16. 16.204 − 178 =
  17. 17.68 − 47 =
  18. 18.505 − 477 =
  19. 19.323 − 289 =
  20. 20.1026 − 975 =
  21. 21.525 − 481 =
  22. 22.328 − 286 =
  23. 23.321 − 289 =
  24. 24.1017 − 981 =
  25. 25.529 − 493 =
  26. 26.1009 − 998 =
  27. 27.96 − 63 =
  28. 28.56 − 37 =
  29. 29.75 − 37 =
  30. 30.66 − 35 =
  31. 31.77 − 29 =
  32. 32.58 − 35 =
  33. 33.304 − 275 =
  34. 34.220 − 182 =
  35. 35.122 − 97 =
  36. 36.127 − 91 =
  37. 37.227 − 177 =
  38. 38.203 − 188 =
  39. 39.505 − 488 =
  40. 40.511 − 491 =

Answer key

  1. 34
  2. 29
  3. 12
  4. 11
  5. 19
  6. 13
  7. 29
  8. 19
  9. 7
  10. 40
  11. 26
  12. 8
  13. 12
  14. 22
  15. 14
  16. 26
  17. 21
  18. 28
  19. 34
  20. 51
  21. 44
  22. 42
  23. 32
  24. 36
  25. 36
  26. 11
  27. 33
  28. 19
  29. 38
  30. 31
  31. 48
  32. 23
  33. 29
  34. 38
  35. 25
  36. 36
  37. 50
  38. 15
  39. 17
  40. 20

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