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189910
Numeros racionales y reprecentacion decimal
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Sandra Nallely G
, updated more than 1 year ago
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Created by
Sandra Nallely G
over 6 years ago
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Mate Mind Map on Numeros racionales y reprecentacion decimal, created by Sandra Nallely G on 09/03/2013.
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Resource summary
Numeros racionales y reprecentacion decimal
1 Numeros racionales
1.1 Si a, b y k son enteros con b = 0 y k =0, entonces (a∙k)/(b∙k)=a/b.
1.1.1 Ejemplo
1.1.1.1 Como el máximo común divisor de 36 y 54: 36/54=(2∙18)/(3∙18)=2/3
2 Metodo de productos cruzados
2.1 Para los números a/b y c/d, b=0, d=0, a/b=c/d si, y solo si a∙d=b∙c
2.1.1 Ejemplo
2.1.1.1 1/3 + 2/5 = 5/15 + 6/15 = 11/15
2.1.2 a/b+c/d= ad/bd+bc/bd=(ad+bc)/bd
3 Multiplicacion
3.1 a/b∙c/d=ac/bd
3.1.1 Ejemplo
3.1.1.1 3/4∙7/10=(3∙7)/(4∙10)=21/40; 5/18∙3/10=(5∙3)/(18∙10)=15/180=(1∙15)/(12∙15)=1/12
4 Divicion
4.1 Si a/b y c/d son números racionales, donde d/c≠0, entonces, a/b÷c/d=a/b∙d/c=ad/bc
4.1.1 Ejemplo
4.1.1.1 3/5÷7/15=3/5∙15/7=45/35=(9∙5)/(7∙5)=9/7
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