Part 2 of 3
Points: 0 of 1
Do the following operations without a calculator. Be sure to express answers in scientific notation You may round your answers to one decimal place (as in $32 \times 10^{5}$ )
a. $(3 \times 10^{5}) \times (2 \times 10^{10})$
b. $(2 \times 10^{6}) + (7 \times 10^{5})$
c. $(8 \times 10^{9}) - (4 \times 10^{6})$

(Use the multiplication symbol in the math palette as needed)
b. $(2 \times 10^{6}) + (7 \times 10^{5}) =$

Answer

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Answer

Final Answer: $2.7 i m e s 10^{6}$

Steps

Step 1 ：The question is asking to add two numbers in scientific notation. The numbers are $2 i m e s 10^{6}$ and $7 i m e s 10^{5}$ .

Step 2 ：To add these numbers, we need to make sure that the powers of 10 are the same. In this case, we can rewrite $7 i m e s 10^{5}$ as $0.7 i m e s 10^{6}$ .

Step 3 ：Then, we can add the coefficients (the numbers in front of the powers of 10) together.

Step 4 ：The sum of $2 i m e s 10^{6}$ and $0.7 i m e s 10^{6}$ is $2.7 i m e s 10^{6}$ .

Step 5 ：Final Answer: $2.7 i m e s 10^{6}$

Answer

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