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  LESSONS


Download      12 años
       Representing numbers on a straight line
       Powers and roots
       Ratio and proportional division
       Operations with natural numbers-1
       Operations with integers - I
       Operations with integers - II
       Multiples and factors. Prime numbers
       Fractions
       Operations with natural numbers - II
       Powers
       Square root
       Square metres, cubic metres
       Metres, litres, kilograms
       Quadrilaterals
       Regular polygons and circles
       Triangles
       Areas of planes figures
       The cartesian plane
  Subir