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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 74 · 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. 1.507 − 479 =
  2. 2.65 − 44 =
  3. 3.1006 − 992 =
  4. 4.503 − 496 =
  5. 5.501 − 483 =
  6. 6.523 − 479 =
  7. 7.98 − 55 =
  8. 8.216 − 195 =
  9. 9.1007 − 976 =
  10. 10.318 − 280 =
  11. 11.69 − 40 =
  12. 12.88 − 64 =
  13. 13.229 − 194 =
  14. 14.56 − 43 =
  15. 15.123 − 77 =
  16. 16.304 − 287 =
  17. 17.121 − 91 =
  18. 18.104 − 67 =
  19. 19.518 − 490 =
  20. 20.313 − 291 =
  21. 21.1024 − 975 =
  22. 22.308 − 279 =
  23. 23.123 − 95 =
  24. 24.308 − 278 =
  25. 25.58 − 35 =
  26. 26.51 − 37 =
  27. 27.208 − 179 =
  28. 28.121 − 75 =
  29. 29.230 − 177 =
  30. 30.125 − 97 =
  31. 31.65 − 37 =
  32. 32.102 − 66 =
  33. 33.120 − 94 =
  34. 34.57 − 42 =
  35. 35.78 − 46 =
  36. 36.505 − 495 =
  37. 37.58 − 43 =
  38. 38.99 − 72 =
  39. 39.128 − 88 =
  40. 40.1026 − 982 =

Answer key

  1. 28
  2. 21
  3. 14
  4. 7
  5. 18
  6. 44
  7. 43
  8. 21
  9. 31
  10. 38
  11. 29
  12. 24
  13. 35
  14. 13
  15. 46
  16. 17
  17. 30
  18. 37
  19. 28
  20. 22
  21. 49
  22. 29
  23. 28
  24. 30
  25. 23
  26. 14
  27. 29
  28. 46
  29. 53
  30. 28
  31. 28
  32. 36
  33. 26
  34. 15
  35. 32
  36. 10
  37. 15
  38. 27
  39. 40
  40. 44

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