Question

Hey, please see the attachment below and see the 2nd question, please find the answer!

Answer 1

a) (8×10^-3)×(2×10^-4)= 16×10^-7= 1.6×10-6

b) (6×10^2)÷(3×10^-5)= 2×10^(2+5)= 2×10^7