N Strand 3 Unit 7 Band g
Practising skills
1 Write down the lower and upper bounds for each of these measurements.
a 80 cm (to the nearest cm)
b 80 cm (to the nearest 10 cm)
c 300 g (to the nearest g)
d 300 g (to the nearest 100 g)
2 Write down the lower and upper bounds for each of these measurements.
a 5000 m (to the nearest m)
b 5000 m (to the nearest 10 m)
c 5000 m (to the nearest 100 m)
d 5000 m (to the nearest 1000 m)
3 Write down the lower and upper bounds for each of these measurements.
a 600 m (to the nearest 10 m)
b 600 m (to the nearest 5 m)
c 600 m (to the nearest 100 m)
d 600 m (to the nearest 50 m)
4 The mass of a bag of potatoes is m kg. To the nearest kg the mass is 6 kg.
Copy and complete this statement.
m<
5 The length of a pencil is l cm. To the nearest cm the length is 9 cm.
Copy and complete this statement.
l<
6 Each of these measurements is rounded to 1 significant figure. Write down the lower and
upper bound for each measurement.
a 3m
b 60 m
c 0.4 mg
d 0.07 km
7 Each of these measurements is rounded to 2 significant figures. Write down the lower and
upper bound for each measurement.
a 24 ml
b 360 g
c 0.83 kg
d 0.019 m
8 Copy and complete this table.
Number
Lower bound
Upper bound
a 4 (to nearest whole number)
b
70 (to nearest 10)
c
600 (to nearest 10)
d
0.3 (to 1 decimal place)
e
0.06 (to 2 decimal places)
f
80 km (to 1 significant figure)
g
68 mg (to 2 significant figures)
h
0.032 (to 2 significant figures)
© Hodder & Stoughton Ltd 2015
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