Number Sense Patterns Missing Operator — Set 51

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easy Set 51
  1. 4 ○ 10 = 40, what is ○?
  2. 8 ○ 2 = 6, what is ○?
  3. 81 ○ 9 = 9, what is ○?
  4. 10 __ 4 = 40
  5. 10 ○ 10 = 20, what is ○?
  6. 80 ○ 10 = 8, what is ○?
  7. 2 ○ 5 = 10, what is ○?
  8. 14 ○ 4 = 10, what is ○?
  9. 9 __ 5 = 45
  10. 27 __ 3 = 9
  11. 7 ○ 6 = 1, what is ○?
  12. 14 __ 2 = 7
  13. 5 ○ 4 = 20, what is ○?
  14. 64 __ 8 = 8
  15. 5 __ 5 = 10
  16. 3 ○ 10 = 30, what is ○?
  17. 2 ○ 4 = 6, what is ○?
  18. 14 ○ 7 = 2, what is ○?
  19. 4 __ 8 = 12
  20. 7 ○ 8 = 15, what is ○?
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