A number, , is rounded to decimal places.
The result is
Using inequalities, write down the error interval for .
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A number, , is rounded to decimal places.
The result is
Using inequalities, write down the error interval for .
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The length, cm, of a line is measured as 13 cm correct to the nearest centimetre.
Complete the following statement to show the range of possible values of
................. ≤ < .................
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Find the value of the reciprocal of 1.6
Give your answer as a decimal.
Jess rounds a number, , to one decimal place.
The result is 9.8
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Jim rounds a number, , to one decimal place.
The result is 7.2
Write down the error interval for .
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By writing each number correct to 1 significant figure, find an estimate for this calculation.
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Use the symbols or to complete this statement.
If x = 4.7, truncated to 1 decimal place, then 4.7 ............... x ............... 4.8
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The length, d, of Jamal’s car is 4.72 m, correct to 2 decimal places.
Complete the error interval for the length, d.
....................... ........................
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Asha worked out
She got an answer of 19.5, correct to 3 significant figures.
Write each number correct to 1 significant figure to decide if Asha’s answer is reasonable.
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The length, L, of a steel rod is 8.3 m, correct to 1 decimal place.
Complete the error interval for length L.
............................ ............................
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When rounded to 3 significant figures,
Circle the correct error interval.
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The height of a tree is 12 metres, correct to the nearest metre.
Circle the error interval.
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To the nearest 1000, there are 18 000 people at a festival.
i)
Write down the minimum possible number of people at the festival.
[1]
ii)
Write down the maximum possible number of people at the festival.
[1]
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The length of a table is 110 cm to the nearest cm
Complete the error interval.
.................cm ⩽ length < .................cm
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The length of each side of a regular pentagon is 8.4 cm to 1 decimal place.
Complete the error interval for the length of one side.
....................cm ⩽ length < ....................cm
Complete the error interval for the perimeter.
....................cm ⩽ perimeter < ....................cm
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Each side of a regular octagon has a length of 18 mm, correct to the nearest 0.5 mm
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The mass of a cat is 4.3 kg correct to 2 significant figures.
i)
Write down the upper bound of the weight of the cat.
........................... kg [1]
ii)
Write down the lower bound of the weight of the cat.
........................... kg [1]
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The length of a book is 33.8 cm, correct to one decimal place.
.............................................. cm [1]
.............................................. cm [1]
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