64 and 81 are squares of whole numbers. 64 is the square of 8 (8x8=64) and 81 is the square of 9 (9x9=81).
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The halfway point between two numbers is found by taking the average of the two numbers. In this case, the average of 10 and 90 is (10 + 90) / 2 = 50. Therefore, the number halfway between 10 and 90 is 50.
(80 + 90) / 2 = 85Therefore, the number between 80 and 90 is 85.
38/9 = 35/9. A number between 34/9 and 35/9 is a number between 340/90 and 350/90 = 341/90 for example.
180.(2)90 = .5n(2)180 = n90 x 2 = 180
Oh, dude, halfway between 40 and 90? Let me grab my calculator and my thinking cap... insert comedic pause Ah, got it! The number halfway between 40 and 90 is 65. You know, for those times when you just gotta split the difference between two random numbers.