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

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

*d*, correct to 2 significant figures is 120kg. Write down the error interval for

*d*

**Question 2:**The number of pies in a factory,

*f*, correct to 3 significant figures is 2,650 pies. Write down the error interval for

*f*

**Question 3:**The length of a road,

*p*, rounded to 2 decimal places is 6.28km. Write down the error interval for the length of the road.

**Question 4:**A number,

*q*,

**truncated**to 1 decimal place is 3.0. Write down the error interval for

*q*

**Question 5:**The area of a plot of land,

*t*, correct to 1 significant figure is 700m

^{2}. Write down the error interval for

*t*

**Question 6:**The weight of a pencil case,

*y*, rounded to the nearest 100g is 300g. Write down the error interval for

*y*

**Question 7:**The speed of a car,

*z*, rounded to the nearest whole number is 56km/h. Write down the error interval for

*z*

**Question 8:**A number,

*u*,

**truncated**to 2 decimal places is 9.33. Write down the error interval for

*u*

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

*v*, rounded to the nearest 10mm is 110mm. Write down the error interval for

*v*

**Question 10:**The quantity of water in a bottle,

*v*, rounded to the nearest whole number is 633ml. Write down the error interval for

*v*

**Question 11:**A number,

*e*, rounded to 1 decimal place is 87.9. Write down the error interval for

*e*

**Question 12:**A number,

*k*, correct to 3 significant figures is 40.8. Write down the error interval for

*k*

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# Answers

**Question 1:**115 ≤

*d*< 125

**Question 2:**2,645 ≤

*f*< 2,655

**Question 3:**6.275 ≤

*p*< 6.285

**Question 4:**3.0 ≤

*q*< 3.1

**Question 5:**650 ≤

*t*< 750

**Question 6:**250 ≤

*y*< 350

**Question 7:**55.5 ≤

*z*< 56.5

**Question 8:**9.33 ≤

*u*< 9.34

**Question 9:**105 ≤

*y*< 115

**Question 10:**632.5 ≤

*v*< 633.5

**Question 11:**87.85 ≤

*e*< 87.95

**Question 12:**40.75 ≤

*k*< 40.85

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