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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 27 · 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. 1.59 − 37 =
  2. 2.1015 − 990 =
  3. 3.208 − 190 =
  4. 4.101 − 92 =
  5. 5.519 − 475 =
  6. 6.1026 − 991 =
  7. 7.521 − 494 =
  8. 8.72 − 45 =
  9. 9.322 − 291 =
  10. 10.521 − 493 =
  11. 11.1021 − 983 =
  12. 12.104 − 67 =
  13. 13.99 − 59 =
  14. 14.105 − 63 =
  15. 15.85 − 73 =
  16. 16.313 − 275 =
  17. 17.96 − 68 =
  18. 18.309 − 286 =
  19. 19.79 − 34 =
  20. 20.101 − 75 =
  21. 21.502 − 475 =
  22. 22.89 − 77 =
  23. 23.1005 − 982 =
  24. 24.314 − 283 =
  25. 25.91 − 62 =
  26. 26.317 − 277 =
  27. 27.67 − 30 =
  28. 28.129 − 90 =
  29. 29.209 − 197 =
  30. 30.304 − 278 =
  31. 31.52 − 47 =
  32. 32.306 − 278 =
  33. 33.104 − 65 =
  34. 34.514 − 480 =
  35. 35.102 − 72 =
  36. 36.64 − 42 =
  37. 37.78 − 25 =
  38. 38.120 − 88 =
  39. 39.514 − 487 =
  40. 40.225 − 178 =

Answer key

  1. 22
  2. 25
  3. 18
  4. 9
  5. 44
  6. 35
  7. 27
  8. 27
  9. 31
  10. 28
  11. 38
  12. 37
  13. 40
  14. 42
  15. 12
  16. 38
  17. 28
  18. 23
  19. 45
  20. 26
  21. 27
  22. 12
  23. 23
  24. 31
  25. 29
  26. 40
  27. 37
  28. 39
  29. 12
  30. 26
  31. 5
  32. 28
  33. 39
  34. 34
  35. 30
  36. 22
  37. 53
  38. 32
  39. 27
  40. 47

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