Powiem wam tyle ze to matma.. xddee POMOCY ! ;-***
/ = kreska ułamkowa. ;)
10 : 2/3 x 1 1/2 = ........................
20 - 6 3/4 : 4 1/2 = ......................
12 x 2 2/3 : 2 3/4 = .....................
4 1/2 : 1 1/2 - 1 3/4 = ...................
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10/1: 2/3x1 1/2=10/1 x 3/2 x 3/2 =15/1 x 3/2 = 45/2 = 22 1/2
20- 27/4 x 2/9 = 20 - 3/2 = 20 - 1,5 = 18,5
12 x 2 2/3 : 2 /34 = 12 x 8/3 x 34/2 = 32/1 x 34/2 = 480
9/2 x 2/3 - 1 3/4 = 3 - 1 3/4 = 1 1/4 = 1,25