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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 279 · 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. 1.319 − 282 =
  2. 2.1025 − 989 =
  3. 3.510 − 480 =
  4. 4.1001 − 994 =
  5. 5.211 − 187 =
  6. 6.210 − 178 =
  7. 7.97 − 68 =
  8. 8.123 − 92 =
  9. 9.1008 − 998 =
  10. 10.113 − 80 =
  11. 11.92 − 69 =
  12. 12.97 − 59 =
  13. 13.78 − 35 =
  14. 14.102 − 71 =
  15. 15.118 − 96 =
  16. 16.314 − 294 =
  17. 17.93 − 56 =
  18. 18.123 − 89 =
  19. 19.530 − 484 =
  20. 20.1006 − 977 =
  21. 21.304 − 280 =
  22. 22.1012 − 986 =
  23. 23.110 − 62 =
  24. 24.73 − 27 =
  25. 25.303 − 280 =
  26. 26.129 − 80 =
  27. 27.205 − 194 =
  28. 28.99 − 65 =
  29. 29.304 − 298 =
  30. 30.1005 − 993 =
  31. 31.230 − 196 =
  32. 32.319 − 275 =
  33. 33.301 − 282 =
  34. 34.225 − 193 =
  35. 35.1025 − 979 =
  36. 36.1029 − 993 =
  37. 37.106 − 83 =
  38. 38.69 − 39 =
  39. 39.56 − 48 =
  40. 40.120 − 90 =

Answer key

  1. 37
  2. 36
  3. 30
  4. 7
  5. 24
  6. 32
  7. 29
  8. 31
  9. 10
  10. 33
  11. 23
  12. 38
  13. 43
  14. 31
  15. 22
  16. 20
  17. 37
  18. 34
  19. 46
  20. 29
  21. 24
  22. 26
  23. 48
  24. 46
  25. 23
  26. 49
  27. 11
  28. 34
  29. 6
  30. 12
  31. 34
  32. 44
  33. 19
  34. 32
  35. 46
  36. 36
  37. 23
  38. 30
  39. 8
  40. 30

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