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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 405 · 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. 1.503 − 489 =
  2. 2.322 − 275 =
  3. 3.54 − 47 =
  4. 4.53 − 48 =
  5. 5.317 − 282 =
  6. 6.101 − 84 =
  7. 7.312 − 283 =
  8. 8.227 − 195 =
  9. 9.130 − 75 =
  10. 10.523 − 475 =
  11. 11.322 − 278 =
  12. 12.58 − 30 =
  13. 13.313 − 290 =
  14. 14.521 − 475 =
  15. 15.128 − 97 =
  16. 16.101 − 58 =
  17. 17.505 − 488 =
  18. 18.63 − 33 =
  19. 19.1017 − 995 =
  20. 20.122 − 91 =
  21. 21.1006 − 997 =
  22. 22.219 − 190 =
  23. 23.1015 − 995 =
  24. 24.77 − 46 =
  25. 25.509 − 482 =
  26. 26.216 − 198 =
  27. 27.83 − 73 =
  28. 28.1027 − 989 =
  29. 29.122 − 96 =
  30. 30.74 − 31 =
  31. 31.510 − 477 =
  32. 32.117 − 94 =
  33. 33.57 − 42 =
  34. 34.206 − 177 =
  35. 35.59 − 30 =
  36. 36.103 − 55 =
  37. 37.329 − 296 =
  38. 38.52 − 37 =
  39. 39.330 − 278 =
  40. 40.71 − 32 =

Answer key

  1. 14
  2. 47
  3. 7
  4. 5
  5. 35
  6. 17
  7. 29
  8. 32
  9. 55
  10. 48
  11. 44
  12. 28
  13. 23
  14. 46
  15. 31
  16. 43
  17. 17
  18. 30
  19. 22
  20. 31
  21. 9
  22. 29
  23. 20
  24. 31
  25. 27
  26. 18
  27. 10
  28. 38
  29. 26
  30. 43
  31. 33
  32. 23
  33. 15
  34. 29
  35. 29
  36. 48
  37. 33
  38. 15
  39. 52
  40. 39

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