Question

Fill in the blanks with the correct steps for solving: (3.71×105)+(4.65×107)
(5 points)
Step 1:
Add 2 to the exponent 5
to get the exponents the same for adding in Scientific Notation.

Step 2:
Change 4.65 to 0.045
to change the coefficient on the term that the exponent was changed.

Step 3:
Divide
the coefficients.

Step 4:
Keep the same
exponents to simplify.

Step 5:
9.4 x 10^7
is the final answer in Scientific Notation.

Answer 1

Here are the correct steps and result for (3.71 × 10^5) + (4.65 × 10^7):

Step 1:
Make the exponents the same. Increase the exponent 5 to 7.

Step 2:
Adjust the coefficient of the term whose exponent changed: 3.71 × 10^5 = 0.0371 × 10^7.

Step 3:
Add the coefficients: 0.0371 + 4.65 = 4.6871.

Step 4:
Keep the common exponent 10^7: 4.6871 × 10^7.

Step 5:
Final answer in scientific notation: 4.6871 × 10^7
(If rounding to three significant figures: 4.69 × 10^7.)