Zad.1
Oblicz sprytnie:
a) 15-(-11)-15-11
b)-10-7-(-7)-18
c) - 5/9+2/3+5/9-5/6-2/3
d)-2/7+3/8-1/2+2/7-1/4+1/2
Zad.9
Oblicz(postaraj sie liczyc w pamięci)
a)(-0,350)*2
b)2,5*(-2)
c)(-4)*(-3/4)
d)3/5*(-1/3)
e)(-1)3(potegi)*(-0,9)
f)(-0,1)*(10)2(potęgi)
g)-2 2 (potęgi):(-2)
h)(-2)3(potegi):4
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Zad.1.
a) 15-(-11)-15-11=15+11-15-11=15-15+11-11=0
b)-10-7-(-7)-18=-10-7+7-18=-10-18=-28
c) - 5/9+2/3+5/9-5/6-2/3=-5/9+5/9+2/3-2/3-5/6=-5/6
d)-2/7+3/8-1/2+2/7-1/4+1/2=-2/7+2/7-1/2+1/2+3/8-1/4=3/8-1/4=3/8-2/8=
=1/8
Zad.2.
a)(-0,350)*2=0,7
b)2,5*(-2)=-5
c)(-4)*(-3/4)=3
d)3/5*(-1/3)=-1/5
e)(-1)³*(-0,9)=-1×(-9)=9
f)(-0,1)*(10)²=-0,1×100=-10
g)-2²:(-2)=4:(-2)=-2
h)(-2)³:4=-8:4=-2
zad.1
a)4-4=0
b)-28
c)-5/6
d) 1/8
zad.9
a) -07
b)-5
c)3
d)-1/5
e)-1
f)-10
g)2
h)-2