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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 266 · 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. 1.301 − 276 =
  2. 2.105 − 90 =
  3. 3.52 − 47 =
  4. 4.310 − 285 =
  5. 5.82 − 69 =
  6. 6.85 − 70 =
  7. 7.105 − 78 =
  8. 8.220 − 183 =
  9. 9.1028 − 978 =
  10. 10.70 − 33 =
  11. 11.1021 − 982 =
  12. 12.1002 − 975 =
  13. 13.1013 − 993 =
  14. 14.511 − 483 =
  15. 15.505 − 479 =
  16. 16.67 − 42 =
  17. 17.206 − 187 =
  18. 18.1023 − 978 =
  19. 19.304 − 291 =
  20. 20.1022 − 994 =
  21. 21.76 − 47 =
  22. 22.1014 − 983 =
  23. 23.93 − 73 =
  24. 24.109 − 59 =
  25. 25.1002 − 991 =
  26. 26.206 − 179 =
  27. 27.1027 − 997 =
  28. 28.95 − 78 =
  29. 29.1006 − 983 =
  30. 30.105 − 91 =
  31. 31.323 − 292 =
  32. 32.324 − 296 =
  33. 33.122 − 92 =
  34. 34.206 − 192 =
  35. 35.317 − 280 =
  36. 36.106 − 87 =
  37. 37.1021 − 985 =
  38. 38.1010 − 998 =
  39. 39.61 − 46 =
  40. 40.93 − 62 =

Answer key

  1. 25
  2. 15
  3. 5
  4. 25
  5. 13
  6. 15
  7. 27
  8. 37
  9. 50
  10. 37
  11. 39
  12. 27
  13. 20
  14. 28
  15. 26
  16. 25
  17. 19
  18. 45
  19. 13
  20. 28
  21. 29
  22. 31
  23. 20
  24. 50
  25. 11
  26. 27
  27. 30
  28. 17
  29. 23
  30. 14
  31. 31
  32. 28
  33. 30
  34. 14
  35. 37
  36. 19
  37. 36
  38. 12
  39. 15
  40. 31

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