(8×105)÷(20×107) in scientific notation

Answer 1

To simplify this calculation in scientific notation, we can first simplify the numbers and then divide.

The given expression can be rewritten as:

(8 ÷ 20) x (10^5 ÷ 10^7)
= 0.4 x 10^(-2)
= 4 x 10^(-3)

Therefore, (8×10^5)÷(20×10^7) in scientific notation is 4×10^(-3).