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Lesson 13.4  Skills Practice
page 11
Name_________________________________________________________ Date__________________________
31. A nitrogen atom has a radius of about 5.6 3 ​10​211​meters.
5.6 3 ​10​211​ 5 ​(5.6)(10​211​)
(  )
1 
5 (5.6)​​( ​ 
 ​  ​​
100,000,000,000 )
5 (5.6)​____
​  1  ​  
​
1011
________________
  
5 (5.6)(0.00000000001)
The number written in standard notation is 0.000000000056.
32. The width of a human hair is about 1.8 3 ​10​23​centimeters.
1.8 3 ​10​23​ 5 ​(1.8)(10​23​)
(  )
5 (1.8)​(_____
 ​  1   ​  ​
1000 )
5 (1.8)​___
​  1  ​  ​
103
5 (1.8)(0.001)
© 2011 Carnegie Learning
The number written in standard notation is 0.0018.
Chapter 13      Skills Practice      •      903
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