igureMaths
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Rounding & bounds
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56 questions at your level
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Level 1
Level 2
Level 3
Level 4
Level 5
Rounding and significant figures
20 questions
Lesson
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(a)
Round
67
483
67\,483
67
483
to
1
1
1
significant figure.
(b)
Round
0.00568
0.00568
0.00568
to
2
2
2
significant figures.
(c)
Round
3.996
3.996
3.996
to
2
2
2
decimal places.
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Level 2
3 marks
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Mark as done
(a)
Work out the value of
3.6
2
+
1.84
12.7
−
4.36
\frac{3.6^2 + 1.84}{\sqrt{12.7 - 4.36}}
12.7
−
4.36
3.
6
2
+
1.84
Write down all the figures on your calculator display.
(2 marks)
(b)
Work out the value of the reciprocal of
0.32
0.32
0.32
(1 mark)
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Level 2
3 marks
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Mark as done
Use your calculator to work out
(
4.9
×
cos
23
∘
)
2
7.15
−
tan
64
∘
\frac{(4.9 \times \cos 23^\circ)^2}{7.15 - \tan 64^\circ}
7.15
−
tan
6
4
∘
(
4.9
×
cos
2
3
∘
)
2
Give your answer correct to 3 significant figures.
(2 marks)
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Level 2
2 marks
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Estimation
15 questions
Lesson
Not started
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Work out an estimate for
7.9
×
3.2
2
0.48
\dfrac{7.9 \times 3.2^2}{0.48}
0.48
7.9
×
3.
2
2
You must show your working. [3]
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Level 2
3 marks
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Upper and lower bounds
23 questions
Lesson
Not started
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A bag of flour weighs
1.5
1.5
1.5
kg to the nearest
0.1
0.1
0.1
kg. Write down the error interval for the weight,
w
w
w
kg.
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Level 2
2 marks
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A number is
40
40
40
to the nearest
10
10
10
. Write down the largest and smallest values it could be, using inequalities.
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Level 2
2 marks
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