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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 389 · 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. 1.1023 − 977 =
  2. 2.1003 − 979 =
  3. 3.508 − 497 =
  4. 4.112 − 80 =
  5. 5.219 − 192 =
  6. 6.1015 − 975 =
  7. 7.517 − 475 =
  8. 8.59 − 38 =
  9. 9.214 − 185 =
  10. 10.1017 − 979 =
  11. 11.72 − 28 =
  12. 12.316 − 279 =
  13. 13.103 − 96 =
  14. 14.92 − 57 =
  15. 15.203 − 181 =
  16. 16.206 − 175 =
  17. 17.53 − 31 =
  18. 18.528 − 485 =
  19. 19.105 − 96 =
  20. 20.1004 − 991 =
  21. 21.520 − 480 =
  22. 22.102 − 98 =
  23. 23.75 − 26 =
  24. 24.309 − 291 =
  25. 25.1008 − 992 =
  26. 26.89 − 61 =
  27. 27.68 − 36 =
  28. 28.52 − 37 =
  29. 29.113 − 82 =
  30. 30.72 − 38 =
  31. 31.90 − 64 =
  32. 32.75 − 45 =
  33. 33.115 − 96 =
  34. 34.322 − 278 =
  35. 35.509 − 485 =
  36. 36.61 − 33 =
  37. 37.1003 − 977 =
  38. 38.69 − 47 =
  39. 39.1012 − 997 =
  40. 40.305 − 292 =

Answer key

  1. 46
  2. 24
  3. 11
  4. 32
  5. 27
  6. 40
  7. 42
  8. 21
  9. 29
  10. 38
  11. 44
  12. 37
  13. 7
  14. 35
  15. 22
  16. 31
  17. 22
  18. 43
  19. 9
  20. 13
  21. 40
  22. 4
  23. 49
  24. 18
  25. 16
  26. 28
  27. 32
  28. 15
  29. 31
  30. 34
  31. 26
  32. 30
  33. 19
  34. 44
  35. 24
  36. 28
  37. 26
  38. 22
  39. 15
  40. 13

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