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​​Approximation: Quiz 6 - Answers

1) LB = 13.7

UB = 13.8

 

2) 6,820 ≤ n < 6,830

 

3) LB = 29,300

UB = 29,400

 

4) 0.00028 ≤ n < 0.00029

 

5) LB = 4.825

UB = 4.826

Working
Questions
1) A number that has been truncated to one decimal place is 13.7. What is the upper and lower bound for this number?
 
2) A number that has been truncated to the tens is 6,820. What is the error interval for this number?
 
3) A number that has been truncated to the 3 significant figures is 29,300. What is the upper and lower bound for this number?
 
4) A number that has been truncated to the 2 significant figures is 0.00028. What is the error interval for this number?
 
5) A number that has been truncated to the 3 decimal places is 4.825. What is the upper and lower bound for this number?