1.oblicz
a) 3 1/6 - 2 5/6
b) 4 1/5-1/5 :0,25
2. zmień jednostki
a) 7/8 godz na min
b)45a na ha
c)42,5dm na km
1.
a) 2/6
b) 3 2/5
2.
a) 52,5 min
b) -
c) 17/40
a) 3 1/6 - 2 5/6= 19/6-17/6=1/6
b) 4 1/5-1/5 :0,25=21/5-1/5:25/100=21/5-4/5=17/5= 3 2/5
a) 7/8 godz na min=52,5 min
b)45a na ha=0,45ha
c)42,5dm na km=0,00425km
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1.
a) 2/6
b) 3 2/5
2.
a) 52,5 min
b) -
c) 17/40
1.
a) 3 1/6 - 2 5/6= 19/6-17/6=1/6
b) 4 1/5-1/5 :0,25=21/5-1/5:25/100=21/5-4/5=17/5= 3 2/5
2. zmień jednostki
a) 7/8 godz na min=52,5 min
b)45a na ha=0,45ha
c)42,5dm na km=0,00425km