Thursday, May 30, 2019

Measurements

Measurements

  1. The Metric Measures (System) :
     i) The standard unit of Length is a metre (m). e.g. 10m , 100m , 500m etc

    ii) The standard unit of Weight is a gram (g). e.g. 10g , 100g , 500g etc

    iii) The standard unit of Capacity is a litre (l). e.g. 10l , 100l , 500l etc
  
     This system is based on the decimal system. The sub units (smaller than the standard units) are the 10ths , 100ths and 1000ths of the standard unit. The bigger units are the 10s , 100s and 1000s of the basic unit.

    Kilo , meaning 1000         : Super Units
    Hecto , meaning 100        : Super Units
    Deca , meaning 10            : Super Units
    Deci , meaning 1/10 or .1 : Sub Units
    Centi , meaning 1/100      : Sub Units
    Milli , meaning 1/1000     : Sub Units

(e.g.)
  1. 1000 = kilo metre , kilo gram , kilo litre
  2. 100 = hecto metre , hecto gram , hecto litre
  3. 10 = deca metre , deca gram , deca litre
  4. 0 (Unit) =  metre , gram , litre
  5. 10th = deci metre , deci gram , deci litre
  6. 100th = centimetre , centigram , centilitre
  7. 1000th = millimetre , milligram , millilitre

*) Important Relationship :

1) Length Measures :
  • 1 kilo metre (km) = 1000 metres (m)
  • 1 hecto metre (hm) = 100 metres (m)
  • 1 deca metre (dem) = 10 metres (m)
  • 1 metre (m) = 100 centimeters (cm)
  • 1 deci metre (dm) = 1/10 metres (m)
  • 1 centi metre (cm) = 1/100 metres (m)
  • 1 milli metre(mm)= 1/1000 metres (m)
  • 1 inch = 25.4 millimeters (mm)
  • 1 foot = 30.48 centimeters (cm)
  • 1 yard = 0.9144 metre (m)
  • 1 mile = 1.6093 kilometers (km)
  • 1 millimetre = 1.094 yards
  • 1 kilometer = 0.62137 mile
  • 1 sq inch = 6.4516 sq centimeters
  • 1 sq yard = 0.8361 sq metres
  • 1 sq mile = 2.589 sq kilometers
  • 1 acre = 4047 sq metres
  • 1 sq centimetre = 0.155 sq inch
  • 1 hectare = 10,000 sq metres
  • 1 hectare = 2.471 acres
2) Capacity Measures :
  • 1 kilo litre (kl) = 1000 litres (l)
  • 1 hecto litre (hl) = 100 litres (l)
  • 1 deca litre (dal) = 10 litres (l)
  • 1 litre (l) = 100 centi litres (cl)
  • 1 deci litre (dl) = 1/10 litres (l)
  • 1 centi litre (cl) = 1/100 litres (l)
  • 1 milli litre (ml) = 1/1000 litres (l)
  • 1 inch³ = 16.387 centimeters³ 
  • 1 pint = 0.568 litre
  • 1 imperial gallon = 4.546 litres
  • 1 litre = 1.76 pints
  • 1 litre = 0.220 imperial gallon
3) Weight Measures :
  • 1 kilo gram (kg) = 1000 grams (g)
  • 1 hecto gram (hg) = 100 grams (g)
  • 1 deca gram (dag) = 10 grams (g)
  • 1 gram (g) = 100 centi grams (cg)
  • 1 deci gram (dg) = 1/10 grams (g)
  • 1 centi gram (cg) = 1/100 grams (g)
  • 1 milli gram (mg) = 1/1000 grams (g)
  • 1 ounce = 28.249 grams (gm)
  • 1 pound = 0.4536 kilograms (kg)
  • 1 stone = 6.350 kilograms
  • 1 cwt = 50.80 kilograms
  • 1 ton = 1.016 metric tons
  • 1 gram = 0.03527 ounce
  • 1 kilogram = 2.205 pounds
  • 1 kilogram = 0.158 stone
  • 1 kilogram = 0.01968 cwt
  • 1 metric ton = 0.9842 ton

Note:- (Easy Conversion Rules)
  • Metres into Yards : Add 1/10th
  • Yards into Metres : Deduct 1/10th
  • Kilometers into Miles : Multiply by 5 and Divide by 8
  • Miles into Kilometers : Multiply by 8 and Divide by 5
  • Litres into Pints : Multiply by 7 and Divide by 4
  • Pints into Litres : Multiply by 4 and Divide by 7
  • Litres into Gallons : Multiply by 2 and Divide by 9
  • Gallons into Litres : Multiply by 9 and Divide by 2
  • Kilograms into Pounds : Multiply by 9 and Divide by 2
  • Pounds into Kilograms : Multiply by 2 and Divide by 9






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