Name: ______________________
Class: __________________
M8-U6: HW #4 – Scientific Notation
Date: __________________
Is each number written in scientific notation? If not, give a reason why it is not.
1. A horse-chestnut has a diameter of about 2  10 0 cm.
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___________________________________
2. The approximate wavelength of infrared light is 0.01  10 5 meter.
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3. Neptune is about 4.488  10 9 km from the sun.
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4. A football field (excluding end zones) is 10  101 yards long.
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Writing a Number in Scientific Notation:
5. 456,000 _________________________
6. 0.0000563 _____________________
7. 00.0045032 ______________________
8. 98,760,000 _______________________
1
Writing a Number in Standard Form:
9. 6.7  10 3 _________________
10. 9.32  10 7 ___________________
11. 4.32  10 5 _________________
12. 5  10 3 ___________________
Spiral:
13.
Write 
4
as an equivalent fraction: ___________________
6
Tell whether each statement is correct. Show work to support your answer.
14.
3 
5 7
4
3
12
15.
8
 2 2 
    2
 3  
3


Rewrite each item as an equivalent expression in exponential notation.
16.
10 2 
17.
18. Solve the following equation: 34x  8  26x  12
2
x7

x7