How do you convert 0.000067 to scientific notation?
Count how many places you move the decimal point until you get
the number 6.7.
If you move the decimal place to the left, the exponent is a positive number, but in this case you have to move the decimal point 5 places to the right so you will have a negative exponent.
Answer: 6.7 x 10-5
3.744000 is scientific notation is 3.744 x 100. This is because the decimal is already placed where it would be after converting the number to scientific notation. However, if you wanted to convert 3744000.0 to scientific notation, you would have to move the decimal left six places. This number, in scientific notation, is 3.744 x 106.
It's best to convert those numbers from scientific notation to normal notation; that makes it easy to add them. After adding them, you can convert back to scientific notation if you want. Another option is to keep the numbers in scientific notation, but to convert them so that both have the same exponent.