Write down the error interval for each of the following questions:Name: Date:

**Question 1:**The weight of a suitcase,

*z*,

**truncated**to 1 decimal place is 13.8kg. Write down the error interval for the weight of the suitcase.

**Question 2:**A number,

*n*, rounded to the nearest whole number is 670. Write down the error interval for

*n*

**Question 3:**The weight of a pencil case,

*e*, rounded to the nearest 100g is 700g. Write down the error interval for

*e*

**Question 4:**A number,

*x*, rounded to the nearest whole number is 18. Write down the error interval for

*x*

**Question 5:**The volume of a box,

*c*, correct to 1 significant figure is 10,000cm

^{3}. Write down the error interval for

*c*

**Question 6:**The length of a piece of string,

*v*, rounded to 1 decimal place is 16.1cm. Write down the error interval for the length

*v*

**Question 7:**A number,

*m*,

**truncated**to 2 decimal places is 10.52. Write down the error interval for

*m*

**Question 8:**The number of pies in a factory,

*p*, correct to 3 significant figures is 3,800 pies. Write down the error interval for

*p*

**Question 9:**The width of a box,

*n*, rounded to the nearest 10mm is 70mm. Write down the error interval for

*n*

**Question 10:**The weight of a crate,

*b*, correct to 2 significant figures is 690kg. Write down the error interval for

*b*

**Question 11:**A number,

*k*, correct to 3 significant figures is 2.45. Write down the error interval for

*k*

**Question 12:**The length of a road,

*t*, rounded to 2 decimal places is 19.16km. Write down the error interval for the length of the road.

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# Answers

**Question 1:**13.8 ≤

*z*< 13.9

**Question 2:**669.5 ≤

*n*< 670.5

**Question 3:**650 ≤

*e*< 750

**Question 4:**17.5 ≤

*x*< 18.5

**Question 5:**9,500 ≤

*c*< 10,500

**Question 6:**16.05 ≤

*v*< 16.15

**Question 7:**10.52 ≤

*m*< 10.53

**Question 8:**3,795 ≤

*p*< 3,805

**Question 9:**65 ≤

*e*< 75

**Question 10:**685 ≤

*b*< 695

**Question 11:**2.445 ≤

*k*< 2.455

**Question 12:**19.155 ≤

*t*< 19.165

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