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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 857 · 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. 1.122 − 97 =
  2. 2.57 − 46 =
  3. 3.514 − 475 =
  4. 4.55 − 39 =
  5. 5.101 − 62 =
  6. 6.62 − 25 =
  7. 7.302 − 282 =
  8. 8.93 − 76 =
  9. 9.102 − 94 =
  10. 10.312 − 278 =
  11. 11.512 − 483 =
  12. 12.126 − 96 =
  13. 13.70 − 35 =
  14. 14.214 − 194 =
  15. 15.64 − 47 =
  16. 16.212 − 187 =
  17. 17.221 − 196 =
  18. 18.230 − 195 =
  19. 19.55 − 30 =
  20. 20.87 − 70 =
  21. 21.1007 − 993 =
  22. 22.54 − 40 =
  23. 23.1018 − 987 =
  24. 24.110 − 58 =
  25. 25.88 − 76 =
  26. 26.95 − 57 =
  27. 27.86 − 71 =
  28. 28.505 − 490 =
  29. 29.521 − 480 =
  30. 30.66 − 36 =
  31. 31.123 − 94 =
  32. 32.104 − 84 =
  33. 33.1015 − 994 =
  34. 34.53 − 35 =
  35. 35.56 − 31 =
  36. 36.1025 − 990 =
  37. 37.201 − 176 =
  38. 38.111 − 80 =
  39. 39.66 − 30 =
  40. 40.56 − 46 =

Answer key

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

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