Question

Find the product and express your answer in scientific notation.

(2.1 × 10-7)(5 × 1011)

Answer 1

(2.1 × 10^-7)(5 × 10^11)

Answer 2

http://www.coolmath.com/prealgebra/06-properties/08-properties-multiplicative-identity-01.htm

Answer 3

The order does not matter.

(2.1 × 10-7)(5 × 1011)

(2.1 x 5)(10^-7 x 10^11)

2.1 x 5 you should be able to evaluate.

For the ten to the power terms, use your properties of exponents to simplify.

Answer 4

Once you have obtained your evaluation, simplify the expression in accordance to the rules of scientific notation.