4oblicz. a) 12x5/ 6 = 2 x 5/1 = 10/1 = 10 b) 2x4/5 = 8/5 = 1 i 3/5 c) 4x11/18 = 2 x 11/9 = 22/9 = 2 i 4/9 d) 25x2/15 = 5 x 2/3 = 10/3 = 3 i 1/3 5oblicz,pamiętając o skracaniu. a) 8x5/12 = 2 x 5/3 = 10/3 = 3 i 1/3 b) 10x8/15 = 2 x 8/3 = 16/3 = 5 i 1/3 c) 3/4x56 = 3/1 x 14 = 42 d) 5/42x28 = 5/6 x 4 = 5/3 x 2 = 10/3 = 3 i 1/3 6oblicz. a) 2x11/18x6 = 22/18 x 6 = 22/3 = 7 i 1/3 b) 3x12/99x11 = 3 x 12/9 = 12/3 = 4 c)4x5/6x5 = 2 x 5/3 x 5 = 10/3 x 5 = 50/3 = 16 i 2/3 d) 12x11/8x2 = 12 x 11/4 = 3 x 11 = 33
4. a) 12*5/6=10 b) 2*4/5=8/5=1 i 3/5 c) 4*11/18=44/18=2 i 8/18 d) 25*2/15=50/15=10/3=3 i 1/3 5. a) 8*5/12=4*5/6=2*5/3=10/3=3 i 1/3 b) 10*8/15=80/15=16/3=5 i 1/3 c) 3/4*56=3*14=42 d) 5/42*28=5/21*14=70/21= 3 i 1/3 6. a) 2*11/18*6=22/16*6=132/18=7 i 1/3 b) 3*12/99*11=33*12/99=396/99=4 c) 4*5/6*5=20*5/6=100/6=50/3=16 i 2/3 d) 12*11/8*2=24*11/8=264/8=33
