Sangeetha Pulapaka
0

STEP 1: Recall what are exponents

STEP 2: Recall what are the rules of exponents

STEP 3: Recall what is scientific notation

http://www.amathsdictionaryforkids.com/qr/s/standardNotation.html

STEP 4: Divide

\frac{8 \times 10^{4}}{2 \times 10^{5}}

Dividing the integers and the exponents

= 4 \times 10^{4-5}

= 4\times 10^{-1} (applying the quotient rule)

Skills you may want to recall:

How to divide two numbers