November 2018 1 20 Report
1.podaj liczbe odwrotna:
a)2 2/5 (dwa całe i dwie piąte)
b)1 3/4

2.oblicz
a)2/3 x 3/4 x 4/3 x 3/2
b)7/18 x 9/13 x 18/7 x 13/9
c) 1 1/2 x 5 x 2/3 x 1/5

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