Question

When we add with scientific notation, we
need to make sure the exponents are the
same. If they are, we simply add the
coefficients and keep the 10 and exponent
the same.
Example: 5.2 x 10 + 3.1 x 10 = 8.3 x 3 3 10
3
What is the sum of
*Remember, you can use your Desmos
calculator from the upper middle of your
screen.
<---Read first
4.12 x 10
6 + 3.9 x 10
6
?
8.02 x 10
6
8.02 x 10
12
8.02 x 10
36
8.02 x 10

Answer 1

To add the numbers in scientific notation, we need to ensure that the exponents are the same. In this case, both numbers are already expressed with the same exponent of \(10^6\):

\[
4.12 \times 10^6 + 3.9 \times 10^6
\]

Since the exponents are the same, we can simply add the coefficients:

\[
4.12 + 3.9 = 8.02
\]

Therefore, the sum is:

\[
8.02 \times 10^6
\]

The correct answer is:

**8.02 x 10^6**