Question

The gold leaf on your necklace is 0.000045 of an inch thick. How do you write 0.000045 in scientific notation?

Answer 1

0.000045 = 00.00045 /10
= 000.0045 / 100
= 0000.045 / 1 000
= 00000.45 / 10 000
= 000004.5 / 100 000 = 4.5 * 10^(-5)

That is in scientific notation

I hope that helps