Z3
Oblicz
a) 2 5/8+1 3/4-1 1/2=
b) 1 1/7*1 3/4=
c) 1 1/3:12=
d) 2 5/6:3 2/5*1/15=
Z4
Oblicz
a) 5,75+1 3/5=
b) 3 1/6-1,4=
c) 1,04*3 1/8=
d) 2 1/3:3,2=
Z5
Oblicz pamiętając o kolejności wykonywania działań
a) 5,12:(5-2,44)=
b) 2³+(3 1/5-1 1/3)=
c) 13,5-3 1/2:5,25=
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Z3 a) 2 5/8+1 3/4-1 1/2= 21/8 + 7/4 - 3/2 = 21/8 + 14/8 - 12/8 = 23/8 = 2 7/8
b) 1 1/7*1 3/4= 8/7 * 7/4 = 2
c) 1 1/3:12= 4/3 * 1/12 = 1/9
d) 2 5/6:3 2/5*1/15=17/6 * 5/17 * 1/15 = 1/18
Z4
a) 5,75+1 3/5= 5 3/4 * 1 3/5 = 23/4 * 8/5 = 46/5 = 9 1/5
b) 3 1/6-1,4= 19/6 - 14/10 = 95/30 - 42/30 = 53/30 = 1 23/30
c) 1,04*3 1/8= 104/100 * 25/8 = 13/4 = 3 1/4
d) 2 1/3:3,2=7/3 : 32/10 = 7/3 * 10/32 = 70/96 = 35/48
Z5
a) 5,12:(5-2,44)= 5,12 : 2,56 = 2
b) 2³+(3 1/5-1 1/3)=8 + ( 48/15 - 20/15 ) = 8 + 28/15 = 8 + 1 13/15 = 9 13/15
c) 13,5-3 1/2:5,25= 13,5 - 35/10 : 5 1/4 = 13,5 - 35/10 * 4/21 = 13 1/2 - 2/3 = 27/2 - 2/3 = 81/6 - 4/6 = 77/6 = 12 5/6