Răspunsuri

2014-03-04T14:08:57+02:00
Trei copii au adunat castane .Primul copil a adunat 10 castane ,al ddoilea de doua ori mai mult ,iar al treilea  de trei ori mai mult decat primi doi la un loc.Cate castane au adunat fiecare copil? 
10x2=20 cop.2 
10+20=30 primi doi cop.
30x3=90 cop.3
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