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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 747 · 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. 1.123 − 85 =
  2. 2.1007 − 979 =
  3. 3.101 − 94 =
  4. 4.71 − 41 =
  5. 5.104 − 62 =
  6. 6.101 − 67 =
  7. 7.51 − 43 =
  8. 8.212 − 192 =
  9. 9.528 − 491 =
  10. 10.322 − 296 =
  11. 11.77 − 37 =
  12. 12.74 − 26 =
  13. 13.219 − 177 =
  14. 14.1007 − 987 =
  15. 15.1016 − 981 =
  16. 16.215 − 176 =
  17. 17.1007 − 994 =
  18. 18.86 − 63 =
  19. 19.78 − 41 =
  20. 20.130 − 94 =
  21. 21.214 − 191 =
  22. 22.1011 − 979 =
  23. 23.322 − 285 =
  24. 24.89 − 68 =
  25. 25.127 − 82 =
  26. 26.117 − 96 =
  27. 27.330 − 283 =
  28. 28.217 − 187 =
  29. 29.83 − 59 =
  30. 30.523 − 494 =
  31. 31.114 − 91 =
  32. 32.321 − 292 =
  33. 33.219 − 190 =
  34. 34.1030 − 997 =
  35. 35.201 − 181 =
  36. 36.212 − 185 =
  37. 37.122 − 98 =
  38. 38.70 − 27 =
  39. 39.1009 − 977 =
  40. 40.320 − 275 =

Answer key

  1. 38
  2. 28
  3. 7
  4. 30
  5. 42
  6. 34
  7. 8
  8. 20
  9. 37
  10. 26
  11. 40
  12. 48
  13. 42
  14. 20
  15. 35
  16. 39
  17. 13
  18. 23
  19. 37
  20. 36
  21. 23
  22. 32
  23. 37
  24. 21
  25. 45
  26. 21
  27. 47
  28. 30
  29. 24
  30. 29
  31. 23
  32. 29
  33. 29
  34. 33
  35. 20
  36. 27
  37. 24
  38. 43
  39. 32
  40. 45

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