Question
Scientific Notation Online Practice
Complete this assessment to review what you've learned. It will not count toward your grade.
3 of 153 of 15 Items
Question
The age of Earth is about 4.6×109
years old. What is the number in decimal notation?(1 point)
Responses
0.0000000046
0.0000000046
4,600,000,000
4,600,000,000
4.6000000000
4.6000000000
46,000,000,000
Answers
GPT-4o mini
The age of the Earth given in scientific notation is \(4.6 \times 10^9\) years. To convert this to decimal notation, you move the decimal point 9 places to the right.
Starting with \(4.6\):
- Move the decimal 9 places to the right:
- 1st move: 46
- 2nd move: 460
- 3rd move: 4600
- 4th move: 46000
- 5th move: 460000
- 6th move: 4600000
- 7th move: 46000000
- 8th move: 460000000
- 9th move: 4600000000
So, \(4.6 \times 10^9\) in decimal notation is **4,600,000,000**.
The correct response is:
**4,600,000,000**
Starting with \(4.6\):
- Move the decimal 9 places to the right:
- 1st move: 46
- 2nd move: 460
- 3rd move: 4600
- 4th move: 46000
- 5th move: 460000
- 6th move: 4600000
- 7th move: 46000000
- 8th move: 460000000
- 9th move: 4600000000
So, \(4.6 \times 10^9\) in decimal notation is **4,600,000,000**.
The correct response is:
**4,600,000,000**