Math Lit

• Simple interest


  A = P (1 + I x N)
• Compound interest


  A = P (1 + I) ^N
• Annuities


  F = x { (1 + I) n - 1 } / i
• Profit as a %


  Profit / cost price x 100
• Profit =


  Selling price - cost price
• Profit margin


  Profit / income x 100 %
• Conversions


  Unit getting bigger ( divide )

  Unit getting smaller ( times )

  
  

  Eg : 10mm divide 10 = 1cm
• Conversions


  10 mm = 1 cm

  100 cm = 1 m

  1000 m = 1 km
• Area


  Square : L x B

  Rectangle : L x B

  Triangle : 1/2 base x height

  Circle : pie x R^2
• Volume


  Rectangle L x B x H

  Pyramid : (l x w h)/3

  Circle : (pie x R^2) x H