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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 964 · 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. 1.516 − 495 =
  2. 2.306 − 297 =
  3. 3.1023 − 994 =
  4. 4.105 − 56 =
  5. 5.509 − 490 =
  6. 6.89 − 77 =
  7. 7.120 − 76 =
  8. 8.502 − 496 =
  9. 9.107 − 74 =
  10. 10.304 − 275 =
  11. 11.63 − 34 =
  12. 12.105 − 62 =
  13. 13.101 − 75 =
  14. 14.329 − 277 =
  15. 15.97 − 56 =
  16. 16.1025 − 993 =
  17. 17.525 − 489 =
  18. 18.98 − 60 =
  19. 19.58 − 36 =
  20. 20.517 − 485 =
  21. 21.530 − 484 =
  22. 22.308 − 278 =
  23. 23.204 − 195 =
  24. 24.125 − 94 =
  25. 25.513 − 496 =
  26. 26.92 − 66 =
  27. 27.73 − 46 =
  28. 28.90 − 73 =
  29. 29.222 − 198 =
  30. 30.528 − 475 =
  31. 31.103 − 85 =
  32. 32.315 − 282 =
  33. 33.313 − 290 =
  34. 34.115 − 97 =
  35. 35.307 − 285 =
  36. 36.307 − 288 =
  37. 37.518 − 481 =
  38. 38.230 − 181 =
  39. 39.120 − 88 =
  40. 40.107 − 93 =

Answer key

  1. 21
  2. 9
  3. 29
  4. 49
  5. 19
  6. 12
  7. 44
  8. 6
  9. 33
  10. 29
  11. 29
  12. 43
  13. 26
  14. 52
  15. 41
  16. 32
  17. 36
  18. 38
  19. 22
  20. 32
  21. 46
  22. 30
  23. 9
  24. 31
  25. 17
  26. 26
  27. 27
  28. 17
  29. 24
  30. 53
  31. 18
  32. 33
  33. 23
  34. 18
  35. 22
  36. 19
  37. 37
  38. 49
  39. 32
  40. 14

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