Question

What is the value of the expression
(
2.5
×
10
−
3
)
(
1.5
×
10
9
)
in scientific notation?


3.75
×
10
−
27


3.25
×
10
6


3.75
×
10
6


4
×
10
6

Answer 1

Multiply the coefficients and add the exponents:
2.5 × 1.5 = 3.75, and 10^(−3+9) = 10^6.

So the product is 3.75 × 10^6.