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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 580 · 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. 1.119 − 77 =
  2. 2.206 − 193 =
  3. 3.307 − 292 =
  4. 4.203 − 198 =
  5. 5.324 − 294 =
  6. 6.105 − 88 =
  7. 7.517 − 485 =
  8. 8.216 − 191 =
  9. 9.208 − 189 =
  10. 10.56 − 43 =
  11. 11.509 − 476 =
  12. 12.203 − 196 =
  13. 13.1017 − 998 =
  14. 14.78 − 33 =
  15. 15.83 − 66 =
  16. 16.308 − 276 =
  17. 17.211 − 175 =
  18. 18.128 − 94 =
  19. 19.1013 − 998 =
  20. 20.110 − 93 =
  21. 21.96 − 77 =
  22. 22.58 − 32 =
  23. 23.202 − 196 =
  24. 24.109 − 98 =
  25. 25.209 − 177 =
  26. 26.69 − 42 =
  27. 27.59 − 43 =
  28. 28.302 − 293 =
  29. 29.103 − 96 =
  30. 30.86 − 64 =
  31. 31.66 − 25 =
  32. 32.227 − 180 =
  33. 33.1001 − 986 =
  34. 34.1029 − 992 =
  35. 35.79 − 29 =
  36. 36.212 − 177 =
  37. 37.1007 − 976 =
  38. 38.1022 − 991 =
  39. 39.507 − 479 =
  40. 40.528 − 493 =

Answer key

  1. 42
  2. 13
  3. 15
  4. 5
  5. 30
  6. 17
  7. 32
  8. 25
  9. 19
  10. 13
  11. 33
  12. 7
  13. 19
  14. 45
  15. 17
  16. 32
  17. 36
  18. 34
  19. 15
  20. 17
  21. 19
  22. 26
  23. 6
  24. 11
  25. 32
  26. 27
  27. 16
  28. 9
  29. 7
  30. 22
  31. 41
  32. 47
  33. 15
  34. 37
  35. 50
  36. 35
  37. 31
  38. 31
  39. 28
  40. 35

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