Matematyka 2001 dla klas 6 ćw 1 zadanie B2 I B3 str 11 B2 Oblicz pamiętając o skracaniu. a) 12/25 : 4/5= b) 15/40 : 45/80= c)18/21 : 9/14 d)27/32 : 33/56 B3 Oblicz pamiętając o skracaniu. a) 2 4/13 : 2 1/7= b) 4 8/15 : 6 4/5= c) 5 5/14 : 2 8/21 d) 4 19/20 : 7 23/25
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a) 12/25 : 4/5=12/25*5/4=3/5
b) 15/40 : 45/80=15/40*80/48=30/48
c)18/21 : 9/14=18/21*14/9=28/21=1 1/3
d)27/32 : 33/56=37/32*56/33=189/132=1 57/132
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a) 2 4/13 : 2 1/7=30/13:15/7=30/13*7/15=42/39=1 1/13
b) 4 8/15 : 6 4/5=68/15:34/5=68/15*5/34=34/51
c) 5 5/14 : 2 8/21=75/14:50/21=75/14*21/50=63/28=2 1/4
d) 4 19/20 : 7 23/25=99/20:198/25=99/20*25/198=55/88