(3×10∧-5)÷(6×10∧-2),

问题描述:

(3×10∧-5)÷(6×10∧-2),

(3×10∧-5)÷(6×10∧-2)
=(3÷6)×(10^-5÷10^-2)
=0.5×10^-3
=5×10^-4