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3.5 x 2 = 7
P= 3,5 x 7 ; 2 = 3,5 x 3,5 = 12,5
odp.A
zad7
240-150 = 90
zostało jej 90/240=9/24=3/8
odp.C
zad8
600m = 60000cm
60000cm:5000=60:5=12cm
odp.C
zad9
50-30=20
nierozwiazane to 20/50=40/100=40%
odp.B