Zad 1.
Oblicz ,pamiętając o kolejności wykonywania działań.
a) 7 - 3/5 : 2
b) 1/3 + 1 2/3 : 4
c) 6 4/9 +2 2/3 : 3
d) 2 2/5 : 10 x 15
e) 3 1/8 x 16 : 30
f) 2 3/16 x 24 : 45
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a)7 - 3/5 : 2 =7-(3/5*1/2)=7-3/10=6 7/10
b) 1/3 + 1 2/3 : 4=1/3+5/2*1/4=1/3+5/8=8/24+15/24=23/24
c) 6 4/9 +2 2/3 : 3=6 4/9+8/3*1/3=6 4/9+8/9=7 3/9
d) 2 2/5 : 10 x 15=2,4:10=0,24*15=3,6
e) 3 1/8 x 16 : 30 =3 1/8*16:30=50:30=50/30=1 20/30
f) 2 3/16 x 24 : 45 =35/16*24/1=840/16:45=840/16*1/45=840/720=1 120/720