Treść zadania

Rozwiązania

• 

  1 0

  Muflona 19.1.2014 (17:36)

  1)
  \frac{1}{8} * \frac{1}{10} = \frac{1}{80}
  2)
  \frac{3}{4} * 2 \frac{2}{5}= \frac{3}{4} * \frac{12}{5} = \frac{9}{5} = 1 \frac{4}{5}
  
  3)
  \frac{3}{5} * 1 \frac{1}{2} = \frac{3}{5}* \frac{3}{2} = \frac{9}{10}
  
  4)
  \frac{3}{5} * \frac{2}{3} = \frac{2}{5}
  
  5)
  3 \frac{1}{3} * 1 \frac{1}{5} = \frac{10}{3} * \frac{6}{5} = 4
  
  6)
  3 \frac{1}{5} * 2 \frac{3}{8}= \frac{16}{5} * \frac{19}{8} = \frac{38}{5} = 7 \frac{3}{5}
  
  7) \frac{4}{5} * 1 \frac{1}{4} = \frac{4}{5} * \frac{5}{4}=1

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• 

  2 0

  sonar 19.1.2014 (17:56)

  1/8 * 1/10= 1/80
  
  
  3/4 * 2 i 2/5=
  
  = 3/4 * 12/5= (skracam 4 z 12)
  
  = 3/1 * 3/5=
  
  = 9/5=
  
  = 1 i 4/5
  
  
  
  
  3/5 * 1 i 1/2=
  
  = 3/5 * 3/2 =
  
  = 9/10
  
  
  
  
  
  3/5 * 2/3 = (skracam 3 z 3)
  
  = 1/5 * 2/1=
  
  = 2/5
  
  
  
  
  
  3 i 1/3 * 1 i 1/5 =
  
  = 10/3 * 6/5 = (skracam 10 z 5 oraz 3 z 6)
  
  = 2/1 * 2/1=
  
  = 4/1=
  
  = 4
  
  
  
  
  
  3 i 1/5 * 2 i 3/8 =
  
  = 16/5 * 19/8 = (skracam 16 z 8)
  
  = 2/5 * 19/1=
  
  = 38/5=
  
  = 7 i 3/5
  
  
  
  
  
  4/5 * 1 i 1/4=
  
  = 4/5 * 5/4 = (skracam 4 z 4 oraz 5 z 5)
  
  = 1/1 * 1/1=
  
  = 1/1=
  
  = 1

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