Răspuns:
3)1/4din 24=1/4×24=24/4=6
1/3din18=1/3×18=18/3=6
1/8din32=1/8×32=32/8=4
1/3din 21=1/3×21=21/3=7
1/6din30=1/6×30=30/6=5
1/7din 35=1/7×35=35/7=5
1/9din54=1/9×54=54/9=6
1/10din60=1/10×60=60/10=6
1/2din18=1/2×18=18/2=9
4)
a)1/10din10lei=1/10×10=10/10=1 leu
1/10din20kg=1/10×20=20/10=2kg
1/10din 50l=1/10×50=50/10=5l
1/10din 40m =1/10×40=40/10=4m
1/10din20minute =1/10×20=20/10=2minute
1/10din30zile =1/10×30=30/10=3zile
b)1/7din1săptămână (din 7zile )=1/7×7=7/7=1zi
1/7din28ani=1/7×28=28/7=4ani
1/7din35minute =1/7×35=35/7=5minute
1/7din21ore=1/7×21=21/7=3ore
