SOLUTION: Hello! I have a question I need help with: •Add the numbers 3.6 x 10^5 and 6.7 x 10^4 without WRITING the number in standard form. Write your answer in scientific notation. Descri

Algebra ->  Exponents -> SOLUTION: Hello! I have a question I need help with: •Add the numbers 3.6 x 10^5 and 6.7 x 10^4 without WRITING the number in standard form. Write your answer in scientific notation. Descri      Log On


   

Question 1108353: Hello! I have a question I need help with:
•Add the numbers 3.6 x 10^5 and 6.7 x 10^4 without WRITING the number in standard form. Write your answer in scientific notation. Describe the steps you took to do this problem.•
Hope you can help! Thanks :)
Found 2 solutions by josgarithmetic, TeachMath:
Answer by josgarithmetic(39621) About Me  (Show Source):
You can put this solution on YOUR website!
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Add the numbers 3.6 x 10^5 and 6.7 x 10^4 without WRITING the number in standard form.
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Do them either all as 10^5 or as 10^4.

36 x 10^4 + 6.7 x 10^4

42.7 x 10^4

4.27 x 10^5

If keeping only two significant figures, then 4.3 x 10^5.

Answer by TeachMath(96) About Me  (Show Source):
You can put this solution on YOUR website!
3.6 * 10^5 + 6.7 * 10^4
10^4(3.6 * 10^1 + 6.7) ------- Factoring out GCF, 10^4
10^4(36 + 6.7)
10^4(42.7) =======> 42.7 * 10^4
4.27 * 10^1 * 10^4
4.27 * 10^5 <======= your answer