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  0 1

  bapi7 23.6.2010 (19:00)

  a) 15/28
  b) 5/36
  c) 4/19 * 19/8 = 1/2
  d) 27/8 * 8/9 = 3
  e) 7/11 * 1/2 = 7/22
  f) 3/2 * 2/3 = 1
  g) 16/5 * 9/4 = 36/5 = 7 1/5
  h) 1/9 * 19/2 = 19/18 = 1 1/18
  i) 3/7 * 3/7 = 9/49
  j) 21/5 * 10/7 = 6
  k) 1/2 : 5/4 = 1/2 * 4/5 = 2/5
  l) 9/8 * 1/8 = 9/64
  m) 4/8 * 2/1 = 1
  n) 36/11 * 1/3 = 12/11 = 1 1/11
  o) 17/7 : 34/7 = 17/7 * 7/34 = 1/2

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  0 0

  darka120 24.6.2010 (11:23)

  a)6/7 * 5/8=3/7*5/4=15/28
  
  b)2/8*5/9=10/72=5/36
  
  c)4/19 * 2 3/8=4/19*19/8=4/8=1/2
  
  d)3 3/8 * 8/9=27/8*8/9=27/9=3
  
  e)7/11 * 12/24=7/11*1/2=7/22
  
  f)1 1/2 * 2/3=3/2*2/3=1
  
  g)3 1/5 * 2 1/4=16/5*9/4=4/5*9/1=36/5=7 i 1/5
  
  h)1/9 * 9 1/2=1/9*19/2=19/18=1 i 1/18
  
  i)3/7 : 7/3=3/7*3/7=9/49
  
  j)4 1/5 : 7/10=21/5*10/7=3/1*2/1=6
  
  k)1/2 : 1 1/4=1/2*4/5=1*2/5=2/5
  
  l)1 1/8 : 8=9/8:8/1=9/8*1/8=9/64
  
  m)4/8 : 1/2=4/8*2/1=4/4*1/1=4/4=1
  
  n)3 3/11 : 3=36/11:3/1=36/11*1/3=12/11*1=12/11=1 i 1/11
  
  o)2 3/7 : 4 6/7=17/7:34/7=17/7*7/34=17/34=1/2

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  0 0

  truffelka 24.6.2010 (12:55)

  a)
  \frac{6}{7} * \frac{5}{8} = \frac{30}{56} = \frac{15}{28}
  
  b)
  \frac{2}{8} * \frac{5}{9} = \frac{10}{72} = \frac{5}{36}
  
  c)
  \frac{4}{19} * 2\frac{3}{8} = \frac{4}{19} * \frac{19}{8} = \frac{1}{2}
  
  d)
  3\frac{3}{8} * \frac{8}{9} = \frac{27}{8} * \frac{8}{9} = \frac{3}{1} = 3
  
  e)
  \frac{7}{11} * \frac{12}{24} = \frac{7}{11} * \frac{1}{2} = \frac{7}{22}
  
  f)
  1\frac{1}{2} * \frac{2}{3} = \frac{3}{2} * \frac{2}{3} = \frac{1}{1} = 1
  
  g)
  3\frac{1}{5} * 2\frac{1}{4} = \frac{16}{5} * \frac{9}{4} = \frac{4}{5} * \frac{9}{1} = \frac{36}{5} = 7\frac{1}{5}
  
  h)
  \frac{1}{9} * 9\frac{1}{2} = \frac{1}{9} * \frac{19}{2} = \frac{19}{18} = 1\frac{1}{18}
  
  i)
  \frac{3}{7} : \frac{7}{3} = \frac{3}{7} * \frac{3}{7} = \frac{9}{49}
  
  j)
  4\frac{1}{5} : \frac{7}{10} = \frac{21}{5} * \frac{10}{7} = \frac{3}{1} * \frac{2}{1} = \frac{6}{1} = 6
  
  k)
  \frac{1}{2} : 1\frac{1}{4} = \frac{1}{2} : \frac{5}{4} = \frac{1}{2} * \frac{4}{5} = \frac{1}{1} * \frac{2}{5} = \frac{2}{5}
  
  l)
  1\frac{1}{8} : 8 = \frac{9}{8} : \frac{8}{1} = \frac{9}{8} * \frac{1}{8} = \frac{9}{64}
  
  m)
  \frac{4}{8} : \frac{1}{2} = \frac{1}{2} * \frac{2}{1} = \frac{2}{2} = 1
  
  n)
  3\frac{3}{11} : 3 = \frac{36}{11} : \frac{3}{1} = \frac{36}{11} * \frac{1}{3} = \frac{12}{11} * \frac{1}{1} = \frac{12}{11} = 1\frac{1}{11}
  
  o)
  2\frac{3}{7} : 4\frac{6}{7} = \frac{17}{7} : \frac{34}{7} = \frac{17}{7} * \frac{7}{34} = \frac{17}{1} * \frac{1}{34} = \frac{17}{34} = \frac{1}{2}

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• 

  0 0

  Konto usunięte, 25.6.2010 (12:10)

  oni mają dobre wyniki..:)

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• 

  0 1

  SeluS 25.6.2010 (13:23)

  a)
  \frac{6}{7} * \frac{5}{8} = \frac{30}{56} = \frac{15}{28}
  
  b)
  \frac{2}{8} * \frac{5}{9} = \frac{10}{72} = \frac{5}{36}
  
  c)
  \frac{4}{19} * 2\frac{3}{8} = \frac{4}{19} * \frac{19}{8} = \frac{1}{2}
  
  d)
  3\frac{3}{8} * \frac{8}{9} = \frac{27}{8} * \frac{8}{9} = \frac{3}{1} = 3
  
  e)
  \frac{7}{11} * \frac{12}{24} = \frac{7}{11} * \frac{1}{2} = \frac{7}{22}
  
  f)
  1\frac{1}{2} * \frac{2}{3} = \frac{3}{2} * \frac{2}{3} = \frac{1}{1} = 1
  
  g)
  3\frac{1}{5} * 2\frac{1}{4} = \frac{16}{5} * \frac{9}{4} = \frac{4}{5} * \frac{9}{1} = \frac{36}{5} = 7\frac{1}{5}
  
  h)
  \frac{1}{9} * 9\frac{1}{2} = \frac{1}{9} * \frac{19}{2} = \frac{19}{18} = 1\frac{1}{18}
  
  i)
  \frac{3}{7} : \frac{7}{3} = \frac{3}{7} * \frac{3}{7} = \frac{9}{49}
  
  j)
  4\frac{1}{5} : \frac{7}{10} = \frac{21}{5} * \frac{10}{7} = \frac{3}{1} * \frac{2}{1} = \frac{6}{1} = 6
  
  k)
  \frac{1}{2} : 1\frac{1}{4} = \frac{1}{2} : \frac{5}{4} = \frac{1}{2} * \frac{4}{5} = \frac{1}{1} * \frac{2}{5} = \frac{2}{5}
  
  l)
  1\frac{1}{8} : 8 = \frac{9}{8} : \frac{8}{1} = \frac{9}{8} * \frac{1}{8} = \frac{9}{64}
  
  m)
  \frac{4}{8} : \frac{1}{2} = \frac{1}{2} * \frac{2}{1} = \frac{2}{2} = 1
  
  n)
  3\frac{3}{11} : 3 = \frac{36}{11} : \frac{3}{1} = \frac{36}{11} * \frac{1}{3} = \frac{12}{11} * \frac{1}{1} = \frac{12}{11} = 1\frac{1}{11}
  
  o)
  2\frac{3}{7} : 4\frac{6}{7} = \frac{17}{7} : \frac{34}{7} = \frac{17}{7} * \frac{7}{34} = \frac{17}{1} * \frac{1}{34} = \frac{17}{34} = \frac{1}{2}

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• 

  0 0

  sylwia987 30.6.2010 (10:34)

  a)6/7 * 5/8=3/7*5/4=15/28
  
  b)2/8*5/9=10/72=5/36
  
  c)4/19 * 2 3/8=4/19*19/8=4/8=1/2
  
  d)3 3/8 * 8/9=27/8*8/9=27/9=3
  
  e)7/11 * 12/24=7/11*1/2=7/22
  
  f)1 1/2 * 2/3=3/2*2/3=1
  
  g)3 1/5 * 2 1/4=16/5*9/4=4/5*9/1=36/5=7 i 1/5
  
  h)1/9 * 9 1/2=1/9*19/2=19/18=1 i 1/18
  
  i)3/7 : 7/3=3/7*3/7=9/49
  
  j)4 1/5 : 7/10=21/5*10/7=3/1*2/1=6
  
  k)1/2 : 1 1/4=1/2*4/5=1*2/5=2/5
  
  l)1 1/8 : 8=9/8:8/1=9/8*1/8=9/64
  
  m)4/8 : 1/2=4/8*2/1=4/4*1/1=4/4=1
  
  n)3 3/11 : 3=36/11:3/1=36/11*1/3=12/11*1=12/11=1 i 1/11
  
  o)2 3/7 : 4 6/7=17/7:34/7=17/7*7/34=17/34=1/2

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  mateo1520 30.6.2010 (15:06)

  a)6/7 * 5/8=3/7*5/4=15/28
  
  b)2/8*5/9=10/72=5/36
  
  c)4/19 * 2 3/8=4/19*19/8=4/8=1/2
  
  d)3 3/8 * 8/9=27/8*8/9=27/9=3
  
  e)7/11 * 12/24=7/11*1/2=7/22
  
  f)1 1/2 * 2/3=3/2*2/3=1
  
  g)3 1/5 * 2 1/4=16/5*9/4=4/5*9/1=36/5=7 i 1/5
  
  h)1/9 * 9 1/2=1/9*19/2=19/18=1 i 1/18
  
  i)3/7 : 7/3=3/7*3/7=9/49
  
  j)4 1/5 : 7/10=21/5*10/7=3/1*2/1=6
  
  k)1/2 : 1 1/4=1/2*4/5=1*2/5=2/5
  
  l)1 1/8 : 8=9/8:8/1=9/8*1/8=9/64
  
  m)4/8 : 1/2=4/8*2/1=4/4*1/1=4/4=1
  
  n)3 3/11 : 3=36/11:3/1=36/11*1/3=12/11*1=12/11=1 i 1/11
  
  o)2 3/7 : 4 6/7=17/7:34/7=17/7*7/34=17/34=1/2

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