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Write down the error interval for each of the following questions:
Question 1:     A number, h, correct to 3 significant figures is 2.78. Write down the error interval for h
Question 2:     The area of a plot of land, z, correct to 1 significant figure is 300m². Write down the error interval for z
Question 3:     A number, y, truncated to 2 decimal places is 0.31. Write down the error interval for y
Question 4:     The number of daily commuters travelling by train, x, correct to 3 significant figures is 80,600. Write down the error interval for x
Question 5:     A number, p, rounded to the nearest whole number is 13. Write down the error interval for p
Question 6:     A number, r, truncated to 1 decimal place is 48.3. Write down the error interval for r
Question 7:     The number of peas in a pack, v, rounded to the nearest 100 is 400 peas. Write down the error interval for v
Question 8:     The length of a piece of string, m, rounded to 1 decimal place is 17.0cm. Write down the error interval for the length m
Question 9:     A number, b, rounded to 2 decimal places is 9.17. Write down the error interval for b
Question 10:     The weight of a crate, g, correct to 2 significant figures is 7,300kg. Write down the error interval for g
Question 11:     A number, c, rounded to the nearest whole number is 337. Write down the error interval for c
Question 12:     The number of passengers on a coach, c, rounded to the nearest 10 is 70 people. Write down the error interval for c

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