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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 883 · 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 − 297 =
  2. 2.83 − 60 =
  3. 3.78 − 32 =
  4. 4.63 − 29 =
  5. 5.301 − 281 =
  6. 6.100 − 69 =
  7. 7.54 − 26 =
  8. 8.106 − 81 =
  9. 9.103 − 63 =
  10. 10.52 − 46 =
  11. 11.208 − 182 =
  12. 12.324 − 298 =
  13. 13.119 − 90 =
  14. 14.76 − 35 =
  15. 15.97 − 74 =
  16. 16.103 − 73 =
  17. 17.219 − 184 =
  18. 18.528 − 496 =
  19. 19.509 − 481 =
  20. 20.1003 − 989 =
  21. 21.217 − 184 =
  22. 22.51 − 30 =
  23. 23.88 − 78 =
  24. 24.59 − 36 =
  25. 25.510 − 480 =
  26. 26.98 − 55 =
  27. 27.65 − 42 =
  28. 28.310 − 280 =
  29. 29.1021 − 986 =
  30. 30.229 − 188 =
  31. 31.521 − 498 =
  32. 32.309 − 280 =
  33. 33.527 − 493 =
  34. 34.87 − 75 =
  35. 35.310 − 290 =
  36. 36.107 − 81 =
  37. 37.87 − 71 =
  38. 38.1012 − 983 =
  39. 39.1021 − 992 =
  40. 40.1014 − 984 =

Answer key

  1. 22
  2. 23
  3. 46
  4. 34
  5. 20
  6. 31
  7. 28
  8. 25
  9. 40
  10. 6
  11. 26
  12. 26
  13. 29
  14. 41
  15. 23
  16. 30
  17. 35
  18. 32
  19. 28
  20. 14
  21. 33
  22. 21
  23. 10
  24. 23
  25. 30
  26. 43
  27. 23
  28. 30
  29. 35
  30. 41
  31. 23
  32. 29
  33. 34
  34. 12
  35. 20
  36. 26
  37. 16
  38. 29
  39. 29
  40. 30

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