METRIC MEASURES Ø Know the different units for

METRIC MEASURES Ø Know the different units for length, weight, capacity (also in abbreviated form) Ø Be able to convert from one metric unit to another Ø Have a rough idea of imperial to metric conversions

Metric Measures distance / length / width / height mm, cm, m, km millimetres centimetres kilometres

Some rough measurements Ø a ruler Ø the height of a man Ø the height of a house Ø the distance to Marble Arch Ø How far can you walk in 20 minutes

Some common conversions to memorize Ø 10 mm = 1 cm Ø 100 cm = 1000 mm Ø 1000 m = 1 km Ø 1 m ≈ 3 feet =1 yard Ø 8 km ≈ 5 miles Ø 30 cm ≈ 12 inches=1 foot

Metric Conversions by 10 mm x by 100 cm m x by 1000 km x by 1000

Change these units 23 cm = 230 mm 96 mm = 9. 6 120 cm = 2. 53 m = cm 1. 2 m 253 cm 4500 m = 4. 5 0. 75 km = km 750 m

Change these units using intermediate steps 1238 mm = 123. 8 14000 cm = 140 24500 cm = cm m 245 m 1. 238 0. 14 m km 0. 245 km

distance / length / width / height Ø I know roughly which units to use to estimate a length Ø I can change one unit to the next by multiplying or dividing by 10, 100 or 1000 correctly Ø 5 miles ≈ 8 km Ø The width of my little finger ≈ 1 cm Ø A ruler is 30 cm ≈ 12 inches=1 foot

Metric Measures Capacity/volume ml, cl, l, kl millilitres centilitres kilolitres

Some rough measurements Ø a tea cup Ø the petrol tank of a car Ø a teaspoon Ø the bath Ø A fish tank

Some common conversions to memorize 10 ml = 1 cl Ø 100 cl = 1000 ml Ø 1000 l = 1 kl Ø 1 l = 1000 cm³ Ø

Conversions by 10 ml x by 100 cl l x by 1000 kl x by 1000

Change these units 23 cl = 230 ml 96 ml = 9. 6 cl 120 cl = 1. 2 l 2. 53 l = 253 cl 4500 l = 0. 75 kl = 4. 5 kl 750 l

Change these units using intermediate steps 1238 ml = 123. 8 cl 1. 238 l 14000 cl = 140 l 0. 14 kl 24500 cl = 245 m 0. 245 kl

Capacity/volume Ø I know roughly which units to use to estimate a volume or capacity of a container Ø I can change one unit to the next by multiplying or dividing by 10, 100 or 1000 correctly Ø 2 pints ≈ 1 litre Ø 1 litre = 1000 cm 3 Ø 4. 5 litres ≈ 1 gallon

Other measures - Area Some formulas Area l Tape measure l Square units l Larger - Smaller Some units cm 2, sq. cm. m 2, sq. m. km 2, sq. km. lxw

Some Areas Area of a football pitch 100 m by 60 m Area of a postage = 6000 m 2 stamp 2 cm by 3 cm = 6 cm 2 Area of a bedroom 3. 7 m by 2. 5 m = 9. 25 m 2

Some Areas of Countries Albania: total: 28, 748 sq km land: 27, 398 sq km water: 1, 350 sq km Afghanistan: total: 652, 000 sq km land: 652, 000 sq km water: 0 sq km Angola: total: 1, 246, 700 sq km land: 1, 246, 700 sq km water: 0 sq km Anguilla: total: 91 sq km land: 91 sq km water: 0 sq km

Other measures - speed Velocity or speed is distance per unit of time Ø Metres per second Ø Miles per hour Ø Kilometres per hour Ø Centimetres per minute Space craft Cars in Britain Cars in Europe Speed of a slow ant

Other measures - salaries Salaries or wages is amount of money per unit of time or even per item Ø £ 20 000 per year Ø £ 6. 25 per hour Ø £ 0. 10 per paper delivered Ø £ 2. 60 per 100 envelopes stuffed Sometimes known as piece work

Other measures - Volume or capacity Ø Amount of space in a box Ø Amount of air in a room Ø Amount of water in the pool Ø Amount of helium in a balloon cm 3 or m 3 litres or m 3 cm 3 or m 3

Other measures - Volume Some formulas l Tape measure l Cubic units l 1 litre is 1000 cm 3 lxwxh Cross section of a prism times the length of a prism