Question

how do i solve the following: 6 X 10 to the power of one + 5 X 10 to the power of zero + 4 X 10 to the negative power of one?

Answer 1

6 x 10^1 = 60

5 x 10^0 = 5
4 x 10^-1 = 0.1
Add 60 + 5 + 0.4 = ??