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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 57 · 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. 1.521 − 495 =
  2. 2.322 − 285 =
  3. 3.101 − 98 =
  4. 4.517 − 485 =
  5. 5.1011 − 990 =
  6. 6.306 − 288 =
  7. 7.303 − 291 =
  8. 8.59 − 48 =
  9. 9.102 − 90 =
  10. 10.60 − 35 =
  11. 11.219 − 194 =
  12. 12.108 − 68 =
  13. 13.122 − 78 =
  14. 14.526 − 492 =
  15. 15.528 − 485 =
  16. 16.307 − 295 =
  17. 17.214 − 195 =
  18. 18.111 − 85 =
  19. 19.65 − 36 =
  20. 20.87 − 74 =
  21. 21.315 − 281 =
  22. 22.96 − 76 =
  23. 23.1011 − 975 =
  24. 24.1004 − 991 =
  25. 25.509 − 476 =
  26. 26.519 − 488 =
  27. 27.1008 − 995 =
  28. 28.511 − 486 =
  29. 29.61 − 47 =
  30. 30.1030 − 989 =
  31. 31.102 − 80 =
  32. 32.310 − 298 =
  33. 33.83 − 73 =
  34. 34.219 − 175 =
  35. 35.109 − 94 =
  36. 36.86 − 61 =
  37. 37.86 − 72 =
  38. 38.502 − 495 =
  39. 39.129 − 94 =
  40. 40.128 − 97 =

Answer key

  1. 26
  2. 37
  3. 3
  4. 32
  5. 21
  6. 18
  7. 12
  8. 11
  9. 12
  10. 25
  11. 25
  12. 40
  13. 44
  14. 34
  15. 43
  16. 12
  17. 19
  18. 26
  19. 29
  20. 13
  21. 34
  22. 20
  23. 36
  24. 13
  25. 33
  26. 31
  27. 13
  28. 25
  29. 14
  30. 41
  31. 22
  32. 12
  33. 10
  34. 44
  35. 15
  36. 25
  37. 14
  38. 7
  39. 35
  40. 31

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