zad 1 s 12
Oblicz:
a) 1 1/3+3 2/3=
b) 4 2/3+7 4/5=
c) 4 1/3-2 2/3=
d) 6 3/5-8 4/5=
e) -3 2/7+7 6/7=
f) -9 4/9-5 7/9=
g) 1 1/2+ 1/3=
h) 2 2/3+ 1/2=
i) 3 1/2- 1/4=
j) 1 1/4- 1/2=
k) 2 3/4-3 1/2=
l) 5 1/4-4 2/3=
zad 1 s 13
Oblicz:
a) (1/2*1/2) : 9/8=
b) (9/5*20/3) : 4/25=
c) (2/3*4/9) : 1/6=
d) (5/8*15/4) : 6/5=
e) (1/2*1/3) : 1/6=
f) (2/3*5/6) : 8/15=
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zad.1. s 12
a) 1 1/3+ 3 2/3=4 + 1/3 + 2/3=5
b) 4 2/3 + 7 4/5=11 + 2/3 + 4/5=11 + 10/15 + 12/15=11 + 22/15=11 + 1 7/15=12 7/15
c) 4 1/3 - 2 2/3=3 4/3 - 2 2/3=1 2/3
d) 6 3/5 - 8 4/5=33/5 - 44/5= - 9/5= -1 4/5
e) -3 2/7+7 6/7=7 6/7 - 3 2/7=4 4/7
f) -9 4/9-5 7/9= -14 11/9= -15 2/9
g) 1 1/2+ 1/3=3/2+1/3=9/6+2/6=11/6=1 5/6
h) 2 2/3+ 1/2=8/3+1/2=16/6+3/6=19/6=3 1/6
i) 3 1/2- 1/4=7/2-1/4=14/4-1/4=13/4=3 1/4
j) 1 1/4- 1/2=5/4-1/2=5/4-2/4=3/4
k) 2 3/4-3 1/2=11/4-7/2=11/4-14/4= -3/4
l) 5 1/4-4 2/3= 21/4-14/3=63/12-56/12=7/12
zad.1. s 13
Oblicz:
a) (1/2*1/2) : 9/8=1/4:9/8=1/4*8/9=1*2/9=2/9
b) (9/5*20/3) : 4/25=12*25/4=75
c) (2/3*4/9) : 1/6=8/27*6=48/27=1 21/27= 1 7/9
d) (5/8*15/4) : 6/5=5/8*15/4*6/5=375/192=1 183/192
e) (1/2*1/3) : 1/6=1/6*6=1
f) (2/3*5/6) : 8/15= 10/18*15/8=5/6*5/4=25/24=1 1/24