Eighty-one
81
92
34
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Three ways of writing 81 with exponents are: 92, 34, and 32 X 32.You could also write it as 8.1 x101.
34, 811, 92
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You can write a ratio three ways. Ex: 2/9, 2 to 9 or 2:9
These are three ways to write it: Thirty million; 30,000,000; and 3 x 107.