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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 545 · 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. 1.1028 − 985 =
  2. 2.58 − 48 =
  3. 3.504 − 498 =
  4. 4.513 − 490 =
  5. 5.124 − 95 =
  6. 6.1022 − 998 =
  7. 7.328 − 281 =
  8. 8.320 − 276 =
  9. 9.1027 − 993 =
  10. 10.503 − 477 =
  11. 11.503 − 498 =
  12. 12.318 − 293 =
  13. 13.219 − 177 =
  14. 14.1017 − 998 =
  15. 15.330 − 287 =
  16. 16.527 − 478 =
  17. 17.114 − 79 =
  18. 18.1001 − 986 =
  19. 19.95 − 71 =
  20. 20.77 − 30 =
  21. 21.519 − 490 =
  22. 22.303 − 285 =
  23. 23.102 − 72 =
  24. 24.1012 − 994 =
  25. 25.315 − 275 =
  26. 26.130 − 87 =
  27. 27.208 − 184 =
  28. 28.520 − 486 =
  29. 29.317 − 280 =
  30. 30.1005 − 989 =
  31. 31.217 − 182 =
  32. 32.96 − 78 =
  33. 33.72 − 27 =
  34. 34.220 − 197 =
  35. 35.330 − 276 =
  36. 36.1030 − 991 =
  37. 37.60 − 36 =
  38. 38.56 − 47 =
  39. 39.228 − 197 =
  40. 40.315 − 290 =

Answer key

  1. 43
  2. 10
  3. 6
  4. 23
  5. 29
  6. 24
  7. 47
  8. 44
  9. 34
  10. 26
  11. 5
  12. 25
  13. 42
  14. 19
  15. 43
  16. 49
  17. 35
  18. 15
  19. 24
  20. 47
  21. 29
  22. 18
  23. 30
  24. 18
  25. 40
  26. 43
  27. 24
  28. 34
  29. 37
  30. 16
  31. 35
  32. 18
  33. 45
  34. 23
  35. 54
  36. 39
  37. 24
  38. 9
  39. 31
  40. 25

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