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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 492 · 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. 1.1002 − 995 =
  2. 2.223 − 191 =
  3. 3.83 − 73 =
  4. 4.312 − 292 =
  5. 5.87 − 76 =
  6. 6.1028 − 996 =
  7. 7.129 − 97 =
  8. 8.529 − 495 =
  9. 9.515 − 479 =
  10. 10.58 − 25 =
  11. 11.205 − 196 =
  12. 12.312 − 282 =
  13. 13.63 − 41 =
  14. 14.85 − 58 =
  15. 15.203 − 192 =
  16. 16.1007 − 998 =
  17. 17.96 − 77 =
  18. 18.224 − 190 =
  19. 19.105 − 98 =
  20. 20.1027 − 981 =
  21. 21.201 − 193 =
  22. 22.313 − 281 =
  23. 23.227 − 181 =
  24. 24.509 − 493 =
  25. 25.504 − 495 =
  26. 26.513 − 493 =
  27. 27.84 − 77 =
  28. 28.319 − 292 =
  29. 29.65 − 45 =
  30. 30.77 − 35 =
  31. 31.107 − 95 =
  32. 32.84 − 62 =
  33. 33.1029 − 982 =
  34. 34.1030 − 984 =
  35. 35.69 − 29 =
  36. 36.527 − 479 =
  37. 37.318 − 287 =
  38. 38.1003 − 975 =
  39. 39.305 − 275 =
  40. 40.87 − 74 =

Answer key

  1. 7
  2. 32
  3. 10
  4. 20
  5. 11
  6. 32
  7. 32
  8. 34
  9. 36
  10. 33
  11. 9
  12. 30
  13. 22
  14. 27
  15. 11
  16. 9
  17. 19
  18. 34
  19. 7
  20. 46
  21. 8
  22. 32
  23. 46
  24. 16
  25. 9
  26. 20
  27. 7
  28. 27
  29. 20
  30. 42
  31. 12
  32. 22
  33. 47
  34. 46
  35. 40
  36. 48
  37. 31
  38. 28
  39. 30
  40. 13

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