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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 959 · 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. 1.105 − 97 =
  2. 2.305 − 293 =
  3. 3.524 − 477 =
  4. 4.57 − 36 =
  5. 5.209 − 175 =
  6. 6.84 − 71 =
  7. 7.112 − 77 =
  8. 8.58 − 43 =
  9. 9.97 − 65 =
  10. 10.506 − 485 =
  11. 11.106 − 65 =
  12. 12.128 − 78 =
  13. 13.1022 − 983 =
  14. 14.95 − 63 =
  15. 15.206 − 192 =
  16. 16.1028 − 978 =
  17. 17.118 − 98 =
  18. 18.76 − 33 =
  19. 19.87 − 78 =
  20. 20.110 − 91 =
  21. 21.214 − 180 =
  22. 22.304 − 285 =
  23. 23.58 − 33 =
  24. 24.509 − 484 =
  25. 25.83 − 57 =
  26. 26.86 − 62 =
  27. 27.213 − 190 =
  28. 28.328 − 281 =
  29. 29.315 − 281 =
  30. 30.1021 − 981 =
  31. 31.304 − 296 =
  32. 32.228 − 190 =
  33. 33.317 − 284 =
  34. 34.515 − 478 =
  35. 35.529 − 490 =
  36. 36.1023 − 998 =
  37. 37.55 − 44 =
  38. 38.75 − 34 =
  39. 39.95 − 56 =
  40. 40.108 − 89 =

Answer key

  1. 8
  2. 12
  3. 47
  4. 21
  5. 34
  6. 13
  7. 35
  8. 15
  9. 32
  10. 21
  11. 41
  12. 50
  13. 39
  14. 32
  15. 14
  16. 50
  17. 20
  18. 43
  19. 9
  20. 19
  21. 34
  22. 19
  23. 25
  24. 25
  25. 26
  26. 24
  27. 23
  28. 47
  29. 34
  30. 40
  31. 8
  32. 38
  33. 33
  34. 37
  35. 39
  36. 25
  37. 11
  38. 41
  39. 39
  40. 19

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