6.4 million in standard form is 6.4 × 106
(standard notation is 6,400,000)
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8^(-2) = 1/8^(2) = 1 /64
== The answer is 64== 2x2x2x2x2x2. ==
64/81 is in its simplest form.
To convert 64% to decimal divide by 100: 64% ÷ 100 = 0.64
64% = 16⁄25 or 0.64