Question

Using a very precise measuring device, Dr. Calvin measured the thickness of a piece of metal to be 0.00064 of a meter. Dr. Amos measured another piece to be 2.5 × 10-5 of a meter thick.
If the doctors put the two pieces of metal on top of each other, the new piece of metal would be
× 10-4 of a meter thick.

Answer 1

so when ever you see "x10-5" all that it is saying is to move the decimal to the left 5 number places