In science notation, 670,000,000+700,000,000=? How to you show your work

1.37x10 to the power of 9

a) 670,000,000 + 700,000,000 = 1,370,000,000

b) Divide 1,370,000,000 by 9 (9 because that is how many digits behind the first comma).

c) You should get 1.37

d) Now, multiply 1.37 by 10^9. You should not actually multiply these numbers; just write your problem.

e) It should look like this: 1.37 x 10^9