Will give 10 points! EASY Chem question!?

Question

I have worked this problem over and over, and I still cannot get the right answer. Please explain how to do it step by step.

[(283.8 x 10^5)] - [(1.300 x 10^3)] x 2.8996 = ???

Is the answer: 8.229 x 10^7 ?

If not, can you please give me the correct answer? Please use the correct number of significant figures in your answer. Thank you! I will give 10 points!

Answer 1

No sorry, order of operations says differently.

Multiplication before subtraction.

Taking it apart step by step:

[(28380000)]-[(1300)] x 2.8996

1300 x 2.8996 = 3769.48

28380000-3769 = 1.837 ^7

Or: 18372462

Don't doubt yourself so much.

You turned a simple three step equation into a question that you thought you had to ask on Yahoo!Answers.

-S ;D

Answer 2

2.8E+07.  The way you have the parentheses, its the first term less, the second term times the third term.  So the answer will be close to 283 10^5.

Answer 3

You must perform multiplication before subtraction. Correct answer is 2.83762*10^7.

Step by step.

283.8 x 10^5 = 28380000

1.300 x 10^3 = 1300

1300 x 2.8996 = 3769.48

28380000 - 3769.48 = 28376230.52 = 2.83762*10^7

Answer 4

Your answer is correct