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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 391 · 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. 1.116 − 87 =
  2. 2.205 − 175 =
  3. 3.530 − 493 =
  4. 4.88 − 73 =
  5. 5.51 − 42 =
  6. 6.306 − 289 =
  7. 7.512 − 483 =
  8. 8.1018 − 981 =
  9. 9.59 − 35 =
  10. 10.217 − 198 =
  11. 11.106 − 92 =
  12. 12.1025 − 992 =
  13. 13.314 − 291 =
  14. 14.320 − 286 =
  15. 15.203 − 186 =
  16. 16.60 − 42 =
  17. 17.55 − 47 =
  18. 18.1006 − 986 =
  19. 19.1027 − 989 =
  20. 20.93 − 55 =
  21. 21.98 − 64 =
  22. 22.71 − 46 =
  23. 23.227 − 175 =
  24. 24.510 − 476 =
  25. 25.102 − 55 =
  26. 26.99 − 73 =
  27. 27.111 − 81 =
  28. 28.106 − 87 =
  29. 29.89 − 56 =
  30. 30.55 − 44 =
  31. 31.112 − 76 =
  32. 32.315 − 292 =
  33. 33.1022 − 987 =
  34. 34.322 − 297 =
  35. 35.215 − 195 =
  36. 36.91 − 60 =
  37. 37.1005 − 986 =
  38. 38.105 − 90 =
  39. 39.76 − 42 =
  40. 40.95 − 70 =

Answer key

  1. 29
  2. 30
  3. 37
  4. 15
  5. 9
  6. 17
  7. 29
  8. 37
  9. 24
  10. 19
  11. 14
  12. 33
  13. 23
  14. 34
  15. 17
  16. 18
  17. 8
  18. 20
  19. 38
  20. 38
  21. 34
  22. 25
  23. 52
  24. 34
  25. 47
  26. 26
  27. 30
  28. 19
  29. 33
  30. 11
  31. 36
  32. 23
  33. 35
  34. 25
  35. 20
  36. 31
  37. 19
  38. 15
  39. 34
  40. 25

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