2,55 : (8,2 : 4 - 2 )
48 x (o,5 + 1/6 = 1/5)
10 x ( 100,5 - 16,1 : 1/5)
3 3\4 : 15 x 1000
2,55 : (8,2 : 4 -2)= 2,55 : 0,05 = 255 : 5 = 51
48 x (o,5 + 1/6 - 1/5) = 48 x (15/30 +5/30 - 6/30) = 48/1 x 14/30 (skracasz 48 i 30 przez 6) = 112/5 = 22,4
3 3\4 : 15 x 1000 = 15/1 x 1/15 x 1000 = 1000
10 x ( 100,5 - 16,1 : 1/5) = 10 x (100,5 -161/10 x 5/1) = 10 x (100,5 -80,5) = 10 x 20 = 200
1.51
2.32
3.200
4.250
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2,55 : (8,2 : 4 -2)= 2,55 : 0,05 = 255 : 5 = 51
48 x (o,5 + 1/6 - 1/5) = 48 x (15/30 +5/30 - 6/30) = 48/1 x 14/30 (skracasz 48 i 30 przez 6) = 112/5 = 22,4
3 3\4 : 15 x 1000 = 15/1 x 1/15 x 1000 = 1000
10 x ( 100,5 - 16,1 : 1/5) = 10 x (100,5 -161/10 x 5/1) = 10 x (100,5 -80,5) = 10 x 20 = 200
1.51
2.32
3.200
4.250