Operazioni con le frazioni

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Mathematics

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6th - 7th Grade

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Hard

Haliaeetus coppola

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Operazioni con le frazioni

Prof Rosario Coppola

Le frazioni possono essere:

sommate
sottratte
moltiplicate
divise

Addizione

ridurre ai minimi termini ogni frazione
si può semplificare solo "sopra-sotto"

$\frac{3}{12}+\frac{2}{9}=$

osservando le frazioni notiamo...che potremmo ridurre ai minimi termini la frazione $\frac{3}{12}$ , la quale diventa $\frac{1}{4}$ , quindi...

$\frac{1}{4}+\frac{2}{9}=\frac{9+8}{36}=\frac{17}{36}$

calcolo del mcd:
$4=2^2$
$9=3^2$
mcm=36
(36:4)x1=9
(36:9)x2=8

Operazioni con le frazioni

Prof Rosario Coppola

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