Posted by **ruby** on Thursday, January 31, 2013 at 12:38pm.

1. Which of the following expressions is written in scientific notation?

1. 73.4 x 105

2. 0.09 × 107

3. 80 x 103

4. 4.22 x 10–3

2. Which of the following is 0.0000000708 written in scientific notation?

1. 7.08 x 10–8

2. 7.8 x 10–8

3. 708 x 10–10

4. 70.08 x 10–9

3. Which expression represents the largest number?

1. 40.1 x 10–6

2. 4.1 x 10–7

3. 0.411 x 10–7

4. 0.04001 x 10–5

4. Which expression is equal to 1/8000 written in scientific notation?

1. 8.0 x 103

2. 1.25 x 10–4

3. 125 x 10–5

4. 1.25 x 104

- math -
**JP**, Thursday, January 31, 2013 at 3:47pm
A number written in scientific notation has to be between 1 and 10. The 10 to whatever power tells you whether to move the decimal point right or left depending on whether it is positive or negative. So for number one, the answer has to be 4. The actual number is 0.0042 because the decimal moves 3 places to the left since it is a -3.

## Answer this Question

## Related Questions

- Math PLZ HELP - 1. Which of the following expressions is written in scientific ...
- Math - Hi everyone! I am extremely struggling with this questions and was hoping...
- Math! Please Check My Awnser! - Hello! I need some help with math! I have tried ...
- Math - Which of the following is 0.0000000708 written in scientific notation? A...
- Math - Use scientific notation to divide the following two numbers. Express the ...
- Math - Which of the following expressions is written in scientific notation? A.)...
- math ALG 2!scientific notations helpp - Write the following value in scientific ...
- math ALG 2!scientific notations helpp - 1.)Write the following value in ...
- math - which of the following expresses 374,274 in scientific notation? 1] 3....
- math - which of the following expresses 374,274 in scientific notation? 1] 3....