1.Wykonaj podane działania>
a.(3 1/2+2 4/7-5 3/7)*2 1/3
b.(1 3/5+2 2/7-3 19/35)*1 5/9
c.(2 3/5-1 7/10-9/50)*1 7/8
d.(3 1/2-2 6/7+3/7)*3 3/5
2.Wykonaj podane działanie
(2 2/3-2 2/15):(3 1/2-1 1/10)
3.oblicz3/4róznicy liczby 4 1/5 i 3 2/5
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1.Wykonaj podane działania>
a.(3 1/2+2 4/7-5 3/7)*2 1/3=(3 1/2+2 8/14-5 6/14)*2 1/3=9/14*7/3=3/2
b.(1 3/5+2 2/7-3 19/35)*1 5/9=(1 21/35+2 10/35-3 19/35)*1 5/9=12/35*14/9=8/15
c.(2 3/5-1 7/10-9/50)*1 7/8=(2 30/50-1 35/50 -9/50)*1 7/8=36/50*15/8=27/20
d.(3 1/2-2 6/7+3/7)*3 3/5=(3 7/14-2 12/14+6/14)*3 3/5=3/14*18/5=27/35
2.Wykonaj podane działanie
(2 2/3-2 2/15):(3 1/2-1 1/10)=(2 10/15/2 2/15):(3 5/10-1 1/10)=8/15: 2 4/10=8/15:24/10=8/15*10/24=2/9
3.oblicz3/4róznicy liczby 4 1/5 i 3 2/5=3/5, bo
4 1/5-3 2/5=4/5
4/5*3/4=3/5