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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 656 · 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. 1.1013 − 979 =
  2. 2.101 − 74 =
  3. 3.84 − 57 =
  4. 4.103 − 92 =
  5. 5.84 − 72 =
  6. 6.207 − 196 =
  7. 7.104 − 76 =
  8. 8.305 − 278 =
  9. 9.58 − 40 =
  10. 10.1002 − 992 =
  11. 11.328 − 285 =
  12. 12.1021 − 981 =
  13. 13.201 − 176 =
  14. 14.502 − 495 =
  15. 15.1017 − 984 =
  16. 16.1013 − 985 =
  17. 17.529 − 496 =
  18. 18.123 − 90 =
  19. 19.205 − 192 =
  20. 20.307 − 296 =
  21. 21.123 − 84 =
  22. 22.87 − 77 =
  23. 23.51 − 47 =
  24. 24.57 − 29 =
  25. 25.95 − 59 =
  26. 26.110 − 98 =
  27. 27.1001 − 982 =
  28. 28.316 − 286 =
  29. 29.1007 − 995 =
  30. 30.303 − 290 =
  31. 31.509 − 476 =
  32. 32.327 − 282 =
  33. 33.220 − 193 =
  34. 34.502 − 484 =
  35. 35.212 − 184 =
  36. 36.1022 − 986 =
  37. 37.85 − 58 =
  38. 38.527 − 476 =
  39. 39.1030 − 980 =
  40. 40.75 − 38 =

Answer key

  1. 34
  2. 27
  3. 27
  4. 11
  5. 12
  6. 11
  7. 28
  8. 27
  9. 18
  10. 10
  11. 43
  12. 40
  13. 25
  14. 7
  15. 33
  16. 28
  17. 33
  18. 33
  19. 13
  20. 11
  21. 39
  22. 10
  23. 4
  24. 28
  25. 36
  26. 12
  27. 19
  28. 30
  29. 12
  30. 13
  31. 33
  32. 45
  33. 27
  34. 18
  35. 28
  36. 36
  37. 27
  38. 51
  39. 50
  40. 37

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