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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 589 · 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. 1.61 − 32 =
  2. 2.1007 − 997 =
  3. 3.82 − 78 =
  4. 4.92 − 74 =
  5. 5.1028 − 992 =
  6. 6.205 − 184 =
  7. 7.57 − 35 =
  8. 8.218 − 179 =
  9. 9.65 − 40 =
  10. 10.53 − 45 =
  11. 11.72 − 43 =
  12. 12.312 − 278 =
  13. 13.127 − 92 =
  14. 14.210 − 179 =
  15. 15.218 − 185 =
  16. 16.310 − 282 =
  17. 17.225 − 190 =
  18. 18.522 − 478 =
  19. 19.1017 − 983 =
  20. 20.517 − 492 =
  21. 21.1006 − 991 =
  22. 22.1001 − 976 =
  23. 23.106 − 71 =
  24. 24.86 − 59 =
  25. 25.227 − 190 =
  26. 26.521 − 489 =
  27. 27.1001 − 983 =
  28. 28.1015 − 977 =
  29. 29.99 − 73 =
  30. 30.215 − 197 =
  31. 31.211 − 194 =
  32. 32.207 − 189 =
  33. 33.58 − 33 =
  34. 34.309 − 277 =
  35. 35.80 − 45 =
  36. 36.123 − 86 =
  37. 37.109 − 95 =
  38. 38.91 − 75 =
  39. 39.78 − 29 =
  40. 40.89 − 72 =

Answer key

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

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