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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 374 · 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. 1.1004 − 980 =
  2. 2.216 − 192 =
  3. 3.51 − 45 =
  4. 4.521 − 485 =
  5. 5.100 − 60 =
  6. 6.123 − 88 =
  7. 7.305 − 278 =
  8. 8.109 − 75 =
  9. 9.85 − 58 =
  10. 10.101 − 89 =
  11. 11.89 − 59 =
  12. 12.110 − 63 =
  13. 13.1011 − 988 =
  14. 14.510 − 476 =
  15. 15.517 − 485 =
  16. 16.1016 − 989 =
  17. 17.1006 − 982 =
  18. 18.107 − 86 =
  19. 19.202 − 195 =
  20. 20.122 − 94 =
  21. 21.1005 − 996 =
  22. 22.323 − 291 =
  23. 23.506 − 481 =
  24. 24.209 − 181 =
  25. 25.223 − 186 =
  26. 26.79 − 43 =
  27. 27.1001 − 995 =
  28. 28.106 − 81 =
  29. 29.520 − 493 =
  30. 30.1004 − 979 =
  31. 31.77 − 30 =
  32. 32.312 − 292 =
  33. 33.109 − 60 =
  34. 34.521 − 490 =
  35. 35.1001 − 981 =
  36. 36.217 − 188 =
  37. 37.1010 − 993 =
  38. 38.314 − 283 =
  39. 39.76 − 44 =
  40. 40.96 − 63 =

Answer key

  1. 24
  2. 24
  3. 6
  4. 36
  5. 40
  6. 35
  7. 27
  8. 34
  9. 27
  10. 12
  11. 30
  12. 47
  13. 23
  14. 34
  15. 32
  16. 27
  17. 24
  18. 21
  19. 7
  20. 28
  21. 9
  22. 32
  23. 25
  24. 28
  25. 37
  26. 36
  27. 6
  28. 25
  29. 27
  30. 25
  31. 47
  32. 20
  33. 49
  34. 31
  35. 20
  36. 29
  37. 17
  38. 31
  39. 32
  40. 33

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