Question

Using mental math find 4.623 x 1000. Please explain how you got your answer​

Answer 1

You can easily figure that

`4.623 = 4623 \cdot 10^(-3)`

`1000 = 1\cdot 10^3`

The multiplication:
`(4623 \cdot 10^(-3)) \cdot (10^3)=4623`

Answer 2

4 623

Explanation:

4.623 x 1000

When multiplying by a positive power of 10, move the decimal by the number of zeros

Since we have 3 zeros, move the decimal 3 places to the right

4 623