Question

3 x 10^-3 as an ordinary number

Answer 1

Answer: 0.003

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Step-by-step explanation:

Think of the first 3 as 3.0

The exponent -3 tells us to move the decimal point three spaces to the left

So the 3.0 turns into 0.003

We can say
`3.0 * 10^(-3) = 0.003`

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Other examples:

`7.2 * 10^(-2) = 0.072\\\\5.18 * 10^(-1) = 0.518\\\\6.4 * 10^(3) = 6400\\\\`

The negative exponent means "move that many spaces to the left", while the positive exponent has us move the decimal point that many spaces to the right.