Measure Units of length, mass and volume Perimeter, area and volume Return to Main Menu

Measurement Units of length Measurements are made using the standard metric system. Units of length The standard unit of length is the metre (m). It is often more convenient to measure in decimal multiples of a metre such as: millimetres (mm), centimetres (cm) and kilometres (km).

Measurements Converting Units of Length

Examples Convert: 2 m to cm. 2 m = 2 x 100 = 200 cm (b) 4 km to m. 4 km = 4 x 1000 = 4000 m (c) 34 cm to mm. 34 cm = 34 x 10 = 340 mm (d) 50 cm to m. 50 cm = 50 x 100 = 0.5 m

Measurement Units of Mass The standard unit of mass is the kilogram (kg). It is often more convenient to work in milligrams (mg) or grams (g). 1 kg = 1000g Kg g

Examples Convert: 2 kg to g. 2 kg = 2 x 1000 = 2000 g (b) 4.6 kg to g. (c) 300g to kg. 300 g = 300 1000 = 0.3 kg

Measurement Units of Volume Volume is normally measured using m3, millilitres (ml) and litres (l). 1 ml = 1cm3 1 L = 1000ml L ml

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Perimeter The perimeter is the distance around a closed shape. Example Calculate the perimeter of the rectangle Perimeter = 6 + 6 + 2 + 2 2 cm = 16 cm 6 cm

Area Area is the amount of space enclosed within a 2D shape. Area formulae length breadth base height A = length x breadth radius

Volume is the amount of space enclosed within a 3D container. height breadth length Volume = Length x breadth x height

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