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Write down the error interval for each of the following questions:
Question 1:     The weight of a pencil case, y, rounded to the nearest 100g is 900g. Write down the error interval for y
Question 2:     The length of a piece of string, z, rounded to 1 decimal place is 41.2cm. Write down the error interval for the length z
Question 3:     A number, r, rounded to the nearest whole number is 84. Write down the error interval for r
Question 4:     A number, v, rounded to 2 decimal places is 15.77. Write down the error interval for v
Question 5:     The weight of a suitcase, w, truncated to 1 decimal place is 7.5kg. Write down the error interval for the weight of the suitcase.
Question 6:     The density of an alloy, n, correct to 2 significant figures is 3.4g/cm³. Write down the error interval for n
Question 7:     The number of daily commuters travelling by train, t, correct to 3 significant figures is 48,900. Write down the error interval for t
Question 8:     The width of a box, e, rounded to the nearest 10mm is 50mm. Write down the error interval for e
Question 9:     A number, h, correct to 3 significant figures is 42.8. Write down the error interval for h
Question 10:     A number, p, truncated to 2 decimal places is 15.76. Write down the error interval for p
Question 11:     The quantity of water in a bottle, e, rounded to the nearest whole number is 520ml. Write down the error interval for e
Question 12:     The volume of a box, c, correct to 1 significant figure is 400cm³. Write down the error interval for c

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