Question

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Answer 1

A number in scientific notation consists of two parts.
1. A number no less than one and less than 10, multiplied by
2. 10 raised to an integer power

In this case, since the number has to be between 1 and 10, you need to take the digits 708 and place a decimal point in order for it to become a number between 1 and 10.
The exponent of ten is determined by counting how many places the decimal point moves from where it is in the original number to where you place it.