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

**Question 1:**The quantity of water in a bottle,

*m*, rounded to the nearest whole number is 746ml. Write down the error interval for

*m*

**Question 2:**A number,

*j*, rounded to 1 decimal place is 82.0. Write down the error interval for

*j*

**Question 3:**The volume of a box,

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

^{3}. Write down the error interval for

*r*

**Question 4:**The number of passengers on a coach,

*m*, rounded to the nearest 10 is 20 people. Write down the error interval for

*m*

**Question 5:**A number,

*k*,

**truncated**to 2 decimal places is 14.11. Write down the error interval for

*k*

**Question 6:**The density of an alloy,

*t*, correct to 2 significant figures is 7.4g/cm

^{3}. Write down the error interval for

*t*

**Question 7:**A number,

*w*, correct to 3 significant figures is 89.1. Write down the error interval for

*w*

**Question 8:**The speed of a car,

*v*, rounded to the nearest whole number is 12km/h. Write down the error interval for

*v*

**Question 9:**The number of peas in a pack,

*h*, rounded to the nearest 100 is 400 peas. Write down the error interval for

*h*

**Question 10:**The length of a road,

*e*, rounded to 2 decimal places is 16.40km. Write down the error interval for the length of the road.

**Question 11:**The weight of a suitcase,

*u*,

**truncated**to 1 decimal place is 10.3kg. Write down the error interval for the weight of the suitcase.

**Question 12:**The number of pies in a factory,

*b*, correct to 3 significant figures is 4,330 pies. Write down the error interval for

*b*

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# Answers

**Question 1:**745.5 ≤

*m*< 746.5

**Question 2:**81.95 ≤

*j*< 82.05

**Question 3:**9,500 ≤

*r*< 10,500

**Question 4:**15 ≤

*m*< 24

**Question 5:**14.11 ≤

*k*< 14.12

**Question 6:**7.35 ≤

*t*< 7.45

**Question 7:**89.05 ≤

*w*< 89.15

**Question 8:**11.5 ≤

*v*< 12.5

**Question 9:**350 ≤

*h*< 449

**Question 10:**16.395 ≤

*e*< 16.405

**Question 11:**10.3 ≤

*u*< 10.4

**Question 12:**4,325 ≤

*b*< 4,335

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