In una grande cesta ci sono 20 pupazzetti, che la maestra vuole regalare ai suoi alunni. Quel giorno in classe ci sono soltanto 6 bambine. Incarica le bambine presenti di ritirare i pupazzetti, per darli successivamente ai compagni assenti; I pupazzetti vengono quindi distribuiti in parti uguali a tutti le bambine, anche se ne avanza qualcuno..
Quanti pupazzetti riceve ogni bambina?
Quanti ne restano nella cesta?
20 pupazzetti:
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6 bambine:
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ogni bambina riceve tre pupazzetti:
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Soluzione:
moltiplico il numero delle bambino con il numero di pupazzi che gli sono stati consegnati.
6 x 3= 18 ( numero di tutti i pupazzetti in mano alle bambine)
Sapendo che i pupazzetti totali sono 20 e quelli affidati alle bambine sono 18, faccio una sottrazione:
20 - 18 = 2
2 è il numero dei pupazzetti rimanenti nella cesta
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