Treść zadania

Najlepsze rozwiązanie

• 

  3 0

  sonar 6.9.2011 (06:42)

  zad 1
  
  a)
  8 * 5/12=
  = 8/1 * 5/12 = (skracam 8 z 12 )
  = 2/1 * 5/3=
  = 10/3=
  = 3 i 1/3
  
  
  b)
  10 * 8/15=
  = 10/1 * 8/15 =(skracam 10 z 15)
  = 2/1 * 8/3=
  = 16/3=
  = 5 i 1/3
  
  c)
  ¾ * 56=
  = ¾ * 56/1 = ( skracam 4 z 56)
  = 3/1 * 14/1=
  = 42/1=
  = 42
  
  
  d)
  5/45 * 28=
  = 5/45 * 28/1 =
  = 140/45=
  = 3 i 5/45=
  = 3 i 1/9
  
  
  
  zad2
  
  a)
  2 * 11/18 * 6 =
  = 2/1 * 11/18 * 6/1= ( skracam 18 z 6)
  = 2/1 * 11/3 * 1/1=
  = 22/3=
  = 7 i 1/3
  
  
  b)
  3 * 12/99 * 11 =
  = 3/1 * 12/99 * 11/1= ( skracam 3 z 99)
  = 1/1 * 12/33 * 11/1= ( skracam 33 z 11)
  = 12/3 * 1/1 =
  = 12/3=
  = 4
  
  
  c)
  4 * 5/6 * 5 =
  = 4/1 * 5/6 * 5/1 = (skracam 4 z 6)
  = 2/1 * 5/3 * 5/1=
  = 50/3=
  = 16 i 2/3
  
  
  d)
  12 * 11/8 * 2 =
  = 12/1 * 11/8 * 2/1= ( skracam 12 z 8)
  = 3/1 * 11/ 2 * 2/1 = ( skracam 2 z 2)
  = 3/1 * 11/1 * 1/1 =
  = 33/1=
  = 33
  
  
  zad3
  
  a)
  100 * 7/1000= (skracam 100 z 1000)
  = 1 * 7/10=
  = 7/10
  
  b)
  4 i 1/5 * 15 =
  =21/5 * 15 = ( skracam 5 z 15)
  = 21/1 * 3=
  = 63/1=
  = 63
  
  
  c)
  5 * 2 i3/4=
  = 5 * 11/4 =
  = 55/4=
  = 13 i 3/4
  
  
  d)
  3 * 2 i 1/4=
  = 3 * 9/4=
  = 27/4 =
  = 6 i ¾
  
  
  e)
  1 i 5/8 * 12 =
  = 13/8 * 12= (skracam 8 z 12)
  = 13/2 * 3=
  = 39/2=
  = 19 i ½
  
  
  f)
  12 * 2 i 7/15=
  = 12 * 37/15 = (skracam 12 z 15)
  = 4 * 37/5=
  = 148/5=
  = 29 i 3/5
  
  
  g)
  9 * 8 i 8/9=
  = 9 * 80/9 = ( skracam 9 z 9)
  = 1 * 80/1=
  = 80/1
  = 80
  
  
  h)
  1 i 5/9 * 3 =
  = 14/9 * 3= ( skracam 9 z 3)
  = 14/3 * 1=
  = 14/3=
  = 4 i 2/3

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