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

                 mm, cm, m, km
millimetres
              centimetres
                            metres
                                     kilometres
      Some rough measurements
 a ruler


 the height of   a man

 the height of   a house

 the distance to   Marble Arch

 How far   can you walk in 20 minutes
Some common conversions to
        memorize

    10mm =  1cm
    100cm = 1m = 1000mm
    1000m = 1km
    1m ≈ 3feet =1 yard
    8km ≈ 5 miles
    30cm ≈ 12 inches=1foot
      Metric Conversions
  by 10     by 100    by 1000



mm         cm     m         km



x by 10    x by 100    x by 1000
           Change these units
23cm =      230 mm

 96mm =       9.6     cm

    120cm =         1.2    m

         2.53m =      253 cm

            4500m =        4.5   km

                   0.75km =      750   m
      Change these units using
         intermediate steps
1238mm =    123.8   cm   1.238    m


14000cm =    140 m       0.14    km


24500cm =     245 m      0.245 km
    distance / length / width / height
   I know roughly which units to use to estimate a
    length

   I can change one unit to the next by multiplying or
    dividing by 10, 100 or 1000 correctly

   5 miles ≈ 8 km

   The width of my little finger ≈ 1 cm

   A ruler is 30cm ≈ 12 inches=1 foot
              Metric Measures
                  Capacity/volume

                  ml, cl, l, kl
millilitres
              centilitres
                            litres
                                     kilolitres
      Some rough measurements
 a tea   cup

 the petrol    tank of a car

 a teaspoon


 the bath


A   fish tank
Some common conversions to
        memorize

    10ml = 1cl
    100cl = 1l = 1000ml
    1000l = 1kl
    1l = 1000cm³
                Conversions
  by 10     by 100    by 1000



ml         cl      l        kl



 x by 10    x by 100   x by 1000
           Change these units
23cl =       230 ml

  96ml =           9.6 cl

     120cl =          1.2 l

         2.53l =        253 cl

            4500l =            4.5 kl

                    0.75kl =       750 l
       Change these units using
          intermediate steps
1238ml =    123.8 cl   1.238 l


14000cl =    140 l     0.14 kl


24500cl =     245 m    0.245 kl
                    Capacity/volume
   I know roughly which units to use to estimate a
    volume or capacity of a container

   I can change one unit to the next by multiplying or
    dividing by 10, 100 or 1000 correctly

   2 pints ≈ 1 litre

   1 litre = 1000cm3

   4.5 litres ≈ 1 gallon
         Other measures - Area
                                          Some
Area                                    formulas
                         Some units
     Tape measure                        r   2


     Square units       cm2, sq. cm.     lxw

     Larger - Smaller    m2, sq. m.      bxh
                         km2, sq. km.
                                           2
             Some Areas
Area of a football pitch
  100m by 60m
 = 6000 m2             Area of a postage
                         stamp 2cm by 3cm
                         = 6 cm2
Area of a bedroom
  3.7m by 2.5m
 = 9.25m2
      Some Areas of Countries
Albania:                 Angola:
  total: 28,748 sq km      total: 1,246,700 sq km
  land: 27,398 sq km       land: 1,246,700 sq km
  water: 1,350 sq km       water: 0 sq km



Afghanistan:             Anguilla:
  total: 652,000 sq km     total: 91 sq km
  land: 652,000 sq km      land: 91 sq km
  water: 0 sq km           water: 0 sq km
        Other measures - speed
Velocity or speed is distance per unit of time

   Metres per second        Space craft

   Miles per hour        Cars in Britain

   Kilometres per hour       Cars in Europe

   Centimetres per minute      Speed of a slow ant
       Other measures - salaries
Salaries or wages is amount of money per unit of time or
    even per item

   £20 000 per year

   £6.25 per hour

   £0.10 per paper delivered

   £2.60 per 100 envelopes stuffed
                                          Sometimes
                                        known as piece
                                            work
      Other measures - Volume
Volume or capacity

   Amount of space in a box        cm3 or m3
   Amount of air in a room          m3
   Amount of water in the pool     litres or m3

   Amount of helium in a balloon     cm3 or m3
    Other measures - Volume
                                   Some
                                 formulas
                                  4
   Tape measure                    r 3
                                  3
   Cubic units
                                   lxwxh
   1 litre is 1000 cm3
                          Cross section of a prism
                          times the length of a prism

				
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