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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 142 · 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. 1.224 − 196 =
  2. 2.125 − 98 =
  3. 3.96 − 77 =
  4. 4.81 − 70 =
  5. 5.316 − 295 =
  6. 6.82 − 55 =
  7. 7.505 − 478 =
  8. 8.91 − 55 =
  9. 9.115 − 85 =
  10. 10.217 − 190 =
  11. 11.519 − 490 =
  12. 12.118 − 85 =
  13. 13.81 − 78 =
  14. 14.97 − 68 =
  15. 15.102 − 93 =
  16. 16.55 − 27 =
  17. 17.83 − 73 =
  18. 18.104 − 75 =
  19. 19.1009 − 998 =
  20. 20.99 − 56 =
  21. 21.1009 − 989 =
  22. 22.322 − 296 =
  23. 23.101 − 75 =
  24. 24.1007 − 995 =
  25. 25.1007 − 987 =
  26. 26.83 − 63 =
  27. 27.65 − 32 =
  28. 28.75 − 47 =
  29. 29.130 − 92 =
  30. 30.101 − 63 =
  31. 31.1030 − 975 =
  32. 32.219 − 195 =
  33. 33.1025 − 997 =
  34. 34.109 − 73 =
  35. 35.221 − 190 =
  36. 36.1005 − 975 =
  37. 37.128 − 81 =
  38. 38.123 − 90 =
  39. 39.58 − 34 =
  40. 40.305 − 288 =

Answer key

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

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