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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 870 · 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. 1.504 − 481 =
  2. 2.65 − 34 =
  3. 3.308 − 297 =
  4. 4.99 − 63 =
  5. 5.314 − 291 =
  6. 6.519 − 495 =
  7. 7.506 − 498 =
  8. 8.305 − 278 =
  9. 9.103 − 63 =
  10. 10.307 − 284 =
  11. 11.1017 − 990 =
  12. 12.202 − 188 =
  13. 13.518 − 475 =
  14. 14.514 − 494 =
  15. 15.306 − 282 =
  16. 16.101 − 62 =
  17. 17.52 − 31 =
  18. 18.124 − 81 =
  19. 19.227 − 178 =
  20. 20.103 − 87 =
  21. 21.124 − 82 =
  22. 22.51 − 34 =
  23. 23.508 − 498 =
  24. 24.76 − 27 =
  25. 25.125 − 88 =
  26. 26.104 − 89 =
  27. 27.522 − 476 =
  28. 28.1005 − 992 =
  29. 29.64 − 46 =
  30. 30.52 − 45 =
  31. 31.72 − 38 =
  32. 32.65 − 33 =
  33. 33.114 − 88 =
  34. 34.514 − 496 =
  35. 35.1004 − 994 =
  36. 36.58 − 38 =
  37. 37.69 − 32 =
  38. 38.68 − 31 =
  39. 39.1007 − 990 =
  40. 40.302 − 285 =

Answer key

  1. 23
  2. 31
  3. 11
  4. 36
  5. 23
  6. 24
  7. 8
  8. 27
  9. 40
  10. 23
  11. 27
  12. 14
  13. 43
  14. 20
  15. 24
  16. 39
  17. 21
  18. 43
  19. 49
  20. 16
  21. 42
  22. 17
  23. 10
  24. 49
  25. 37
  26. 15
  27. 46
  28. 13
  29. 18
  30. 7
  31. 34
  32. 32
  33. 26
  34. 18
  35. 10
  36. 20
  37. 37
  38. 37
  39. 17
  40. 17

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