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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 14 · 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. 1.79 − 27 =
  2. 2.84 − 58 =
  3. 3.328 − 294 =
  4. 4.503 − 493 =
  5. 5.77 − 35 =
  6. 6.100 − 69 =
  7. 7.58 − 34 =
  8. 8.98 − 74 =
  9. 9.67 − 35 =
  10. 10.202 − 191 =
  11. 11.101 − 93 =
  12. 12.56 − 48 =
  13. 13.319 − 277 =
  14. 14.505 − 481 =
  15. 15.73 − 27 =
  16. 16.324 − 289 =
  17. 17.1021 − 980 =
  18. 18.1017 − 992 =
  19. 19.106 − 80 =
  20. 20.107 − 65 =
  21. 21.1005 − 981 =
  22. 22.1011 − 995 =
  23. 23.328 − 277 =
  24. 24.509 − 482 =
  25. 25.328 − 292 =
  26. 26.220 − 192 =
  27. 27.326 − 284 =
  28. 28.1025 − 985 =
  29. 29.87 − 78 =
  30. 30.503 − 497 =
  31. 31.107 − 72 =
  32. 32.102 − 76 =
  33. 33.322 − 280 =
  34. 34.310 − 283 =
  35. 35.1028 − 980 =
  36. 36.509 − 491 =
  37. 37.228 − 184 =
  38. 38.114 − 90 =
  39. 39.112 − 97 =
  40. 40.112 − 78 =

Answer key

  1. 52
  2. 26
  3. 34
  4. 10
  5. 42
  6. 31
  7. 24
  8. 24
  9. 32
  10. 11
  11. 8
  12. 8
  13. 42
  14. 24
  15. 46
  16. 35
  17. 41
  18. 25
  19. 26
  20. 42
  21. 24
  22. 16
  23. 51
  24. 27
  25. 36
  26. 28
  27. 42
  28. 40
  29. 9
  30. 6
  31. 35
  32. 26
  33. 42
  34. 27
  35. 48
  36. 18
  37. 44
  38. 24
  39. 15
  40. 34

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