Final answer:
To write 4.58 times 10 to the power of -3 as an ordinary number, we need to move the decimal point three places to the left. The answer is 0.000458.
Step-by-step explanation:
To write 4.58 times 10 to the power of -3 as an ordinary number, we need to move the decimal point three places to the left because the exponent is negative. Starting with 4.58, we move the decimal point three places to the left and add zeros if necessary. So, the answer is 0.000458.