Explanation: Since the equation is 6.92 * 10^ -8 You know that you need to move the decimal 8 places to the left ( left is negative, right is positive)
If you move the decimal 8 places to the left the decimal still needs to pass the 6, so there will actually be 7 zeroes instead of 8.
To write a scientific notation number in standard notation, move the decimal point the number of the exponent. It it is a negative exponent, the decimal point moves to the left. The exponent in this problem is -8, so you need to move the decimal point 8 places to the left.
