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Compensation

Compensation. Category 1. Removing 1 from an addend and adding it to the other addend. 5 + 5 4 + 6 6 + 6 5 + 7. 7 + 7 6 + 8 8 + 8 7 + 9. 10 + 10 9 + 11 12 + 12 11 + 13. 3 + 9 9 + 5 7 + 9 9 + 6. 2 + 9 4 + 9 6 + 9 9 + 8. 9 + 7 4 + 9 9 + 6 8 + 9. 16 + 9 9 + 12

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Compensation

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  1. Compensation

  2. Category 1 • Removing 1 from an addend and adding it to the other addend.

  3. 5 + 5 4 + 6 6 + 6 5 + 7

  4. 7 + 7 6 + 8 8 + 8 7 + 9

  5. 10 + 10 9 + 11 12 + 12 11 + 13

  6. 3 + 9 9 + 5 7 + 9 9 + 6

  7. 2 + 9 4 + 9 6 + 9 9 + 8

  8. 9 + 7 4 + 9 9 + 6 8 + 9

  9. 16 + 9 9 + 12 15 + 9 13 + 9

  10. 16 + 4 19 + 4 6 + 19 19 + 3

  11. 14 + 9 9 + 7 15 + 9 19 + 6

  12. Category 2 • Adding and Subtracting 1 using larger numbers

  13. 19 + 6 9 + 16 9 + 26 29 + 6

  14. 7 + 19 5 + 29 39 + 8 49 + 6

  15. 11 + 19 9 + 29 21 + 9 19 + 18

  16. 17 + 19 9 + 18 13 + 9 16 + 19

  17. 29 + 31 29 + 16 19 + 26 19 + 19

  18. 16 + 14 19 + 21 26 + 24 29 + 31

  19. 29 + 19 29 + 23 28 + 29 23 + 19

  20. 39 + 7 49 + 8 39 + 16 41 + 19

  21. 35 + 29 36 + 34 49 + 23 49 + 49

  22. Category 3 • Adding and Subtracting 2 or more to make combinations

  23. 4 + 8 8 + 6 8 + 5 7 + 8

  24. 8 + 7 17 + 8 13 + 17 17 + 18

  25. 27 + 28 28 + 16 37 + 18 23 + 28

  26. 27 + 18 38 + 24 18 + 22 48 + 16

  27. 17 + 23 22 + 28 35 + 27 38 + 36

  28. 23 + 48 17 + 24 47 + 24 17 + 37

  29. 13 + 17 23 + 27 33 + 37 43 + 47

  30. 28 + 45 53 + 18 38 + 47 17 + 78

  31. 18 + 63 37 + 38 67 + 28 48 + 52

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