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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 300 · 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. 1.320 − 277 =
  2. 2.102 − 64 =
  3. 3.103 − 92 =
  4. 4.71 − 34 =
  5. 5.515 − 488 =
  6. 6.206 − 190 =
  7. 7.68 − 28 =
  8. 8.102 − 95 =
  9. 9.227 − 177 =
  10. 10.86 − 55 =
  11. 11.88 − 62 =
  12. 12.315 − 275 =
  13. 13.74 − 47 =
  14. 14.523 − 476 =
  15. 15.124 − 85 =
  16. 16.107 − 94 =
  17. 17.91 − 60 =
  18. 18.101 − 96 =
  19. 19.507 − 488 =
  20. 20.503 − 495 =
  21. 21.505 − 490 =
  22. 22.85 − 76 =
  23. 23.519 − 496 =
  24. 24.89 − 64 =
  25. 25.80 − 38 =
  26. 26.103 − 73 =
  27. 27.1023 − 975 =
  28. 28.58 − 42 =
  29. 29.76 − 42 =
  30. 30.208 − 184 =
  31. 31.74 − 46 =
  32. 32.78 − 26 =
  33. 33.89 − 65 =
  34. 34.202 − 189 =
  35. 35.1010 − 992 =
  36. 36.306 − 294 =
  37. 37.60 − 46 =
  38. 38.73 − 25 =
  39. 39.105 − 67 =
  40. 40.90 − 73 =

Answer key

  1. 43
  2. 38
  3. 11
  4. 37
  5. 27
  6. 16
  7. 40
  8. 7
  9. 50
  10. 31
  11. 26
  12. 40
  13. 27
  14. 47
  15. 39
  16. 13
  17. 31
  18. 5
  19. 19
  20. 8
  21. 15
  22. 9
  23. 23
  24. 25
  25. 42
  26. 30
  27. 48
  28. 16
  29. 34
  30. 24
  31. 28
  32. 52
  33. 24
  34. 13
  35. 18
  36. 12
  37. 14
  38. 48
  39. 38
  40. 17

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