Rozwiąż przykłady :
a) 1 2/3 + 2 3/4 + 3 4/9 * ( 8 2/5 - 7 3/20 ) = ?
b) 2 3/5 * 6 1/4 - 3 1/4 : 3 5/7 + 0,625 = ?
* - razy
/ - kreska ułamkowa
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a) 5/3 + 11/4 + 31/9*(42/5 - 143/20) =
5/3 + 11/4 + 31/9* (168/20 - 143/20)=
5/3 + 11/4 + 31/9*25/20 =
5/3 + 11/4 + 775/180 =
300/180 + 495/180 + 775/180 =
1570/180 = 8 130/180 = 8 13/18
b) 2 3/5*6 1/4:3 5/7 + 0,625 =
13/5* 25/4: 26/7 + 0,625
64/4*7/26 + 0,625 =
455/104 + 0,625 =
4,375 + 0,625 = 5