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

**Question 1:**A number,

*r*, correct to 3 significant figures is 3.98. Write down the error interval for

*r*

**Question 2:**The average height of a Year 6 student,

*j*,

**truncated**to 2 decimal places is 137.44cm. Write down the error interval for the average height.

**Question 3:**The speed of a car,

*q*, rounded to the nearest whole number is 75km/h. Write down the error interval for

*q*

**Question 4:**A number,

*p*,

**truncated**to 1 decimal place is 98.4. Write down the error interval for

*p*

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

*c*, rounded to the nearest 10mm is 80mm. Write down the error interval for

*c*

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

*d*, correct to 2 significant figures is 5.5g/cm

^{3}. Write down the error interval for

*d*

**Question 7:**A number,

*c*, rounded to the nearest whole number is 787. Write down the error interval for

*c*

**Question 8:**The weight of a pencil case,

*w*, rounded to the nearest 100g is 600g. Write down the error interval for

*w*

**Question 9:**The number of pies in a factory,

*k*, correct to 3 significant figures is 1,520 pies. Write down the error interval for

*k*

**Question 10:**The volume of a box,

*n*, correct to 1 significant figure is 100cm

^{3}. Write down the error interval for

*n*

**Question 11:**A number,

*e*, rounded to 1 decimal place is 19.9. Write down the error interval for

*e*

**Question 12:**A number,

*v*, rounded to 2 decimal places is 3.91. Write down the error interval for

*v*

© GCSEMathsWorksheets.com

# Answers

**Question 1:**3.975 ≤

*r*< 3.985

**Question 2:**137.44 ≤

*j*< 137.45

**Question 3:**74.5 ≤

*q*< 75.5

**Question 4:**98.4 ≤

*p*< 98.5

**Question 5:**75 ≤

*w*< 85

**Question 6:**5.45 ≤

*d*< 5.55

**Question 7:**786.5 ≤

*c*< 787.5

**Question 8:**550 ≤

*w*< 650

**Question 9:**1,515 ≤

*k*< 1,525

**Question 10:**95 ≤

*n*< 105

**Question 11:**19.85 ≤

*e*< 19.95

**Question 12:**3.905 ≤

*v*< 3.915

© GCSEMathsWorksheets.com