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 320kg. Write down the error interval for

*d*

**Question 2:**A number,

*y*,

**truncated**to 2 decimal places is 5.62. Write down the error interval for

*y*

**Question 3:**A number,

*f*, correct to 3 significant figures is 19.1. Write down the error interval for

*f*

**Question 4:**The number of peas in a pack,

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

*m*

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

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

*n*

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

*u*, rounded to 1 decimal place is 10.7cm. Write down the error interval for the length

*u*

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

*t*, rounded to the nearest whole number is 98km/h. Write down the error interval for

*t*

**Question 8:**The number of daily commuters travelling by train,

*p*, correct to 3 significant figures is 73,300. Write down the error interval for

*p*

**Question 9:**The area of a plot of land,

*g*, correct to 1 significant figure is 30m

^{2}. Write down the error interval for

*g*

**Question 10:**A number,

*s*,

**truncated**to 1 decimal place is 13.4. Write down the error interval for

*s*

**Question 11:**A number,

*n*, rounded to the nearest whole number is 863. Write down the error interval for

*n*

**Question 12:**A number,

*c*, rounded to 2 decimal places is 10.78. Write down the error interval for

*c*

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# Answers

**Question 1:**315 ≤

*d*< 325

**Question 2:**5.62 ≤

*y*< 5.63

**Question 3:**19.05 ≤

*f*< 19.15

**Question 4:**350 ≤

*m*< 449

**Question 5:**105 ≤

*m*< 115

**Question 6:**10.65 ≤

*u*< 10.75

**Question 7:**97.5 ≤

*t*< 98.5

**Question 8:**73,250 ≤

*p*< 73,349

**Question 9:**25 ≤

*g*< 35

**Question 10:**13.4 ≤

*s*< 13.5

**Question 11:**862.5 ≤

*n*< 863.5

**Question 12:**10.775 ≤

*c*< 10.785

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