cpc32
cpc32
08-02-2014
Matemáticas
contestada
cuales son las decenas puras
Respuesta :
janeth14
janeth14
08-02-2014
decenas puras
mira:
2 decenas puras =20 unidades
3 decenas puras=30 unidades
7 decenas puras= 70 unidades
9 decenas puras=90 unidades
ahora:
40 unidades: 4 decenas
60 unidades: 6 decenas
180 unidades: 18 decenas
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