2. Question : 
 Rewrite using scientific notation: 0.0054.
 Student Answer: 
 5.4 _ 10-1
 5.4 _ 10-2
 5.4 _ 10-3
 5.4 _ 10-4
 Question 4. Question : 
 Rewrite using standard notation: 38.1 _ 10^-3
 Student Answer: 
 0.381
 0.0381
 38,100
 3,810
 Question 6. Question : 
 In the expression, 6.24 _ 10^3, which number is the exponent?
 Student Answer: 
 6.24
 10
 3
 6
 Question 8. Question : 
 In the expression, 8.92 _ 10^3, which number is the base?
 Student Answer: 
 8.92
 10
 3
 8