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: Multiply

( 2 \times 10^{2})( 4 \times 10^{3})

Grouping the integers and the powers of 10, we get

= ( 2 \times 4) ( 10^{2} \times 10^{3})

= (8)(10^{2+5})

Using the product rule.

= 8 \times 10^{7}

Skills you may want to recall further:

What are integers

https://techterms.com/definition/integer