Number
Number

Statistics and Probability
Statistics and Probability

Algebra
Algebra
Geometry and Measures
Mock Exams

4.9 Scales

Convert the following measurements into the unit shown in brackets.

1.
1.46× 10 6 mm(m)
Since 1cm=10mm and 100cm=1m
100( 10mm ) = 1m 1mm = 1 1000 m 1.46× 10 6 mm = 1.46× 10 6 1000 m = 1460m
2.
5.5× 10 6 cm(km)
Since 1m=100cm and 1km=1000m
1km = 1000×(100)cm 1cm = 1 1× 10 5 km 5.5× 10 6 cm = 5.5× 10 6 1× 10 5 km = 55km
3.
2.4miles(m) . Leave your answer to 2sf
Since 1mile=1609m
2.4miles = 2.4×1609m = 3862m

Remember these conversions factors

Millimetres to Centimetres: 10mm=1cm

Centimetres to Metres: 100cm=1m

Metres to Kilometres: 1000m=1km

Kilometres to Miles: 1.609km=1mile


Always ‘Sanity Check’ your answer. Does your answer make sense?
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