Oblicz , pamietając o kolejności wykonywania działan .
1 zad.
(-4) x(-5) =
(-4) x (-5) x(-3) =
(-4) x (-5) x(-3)x (-2) =
2 zad.
a) (-1212) :3 x 4 =
b) (- 1212) : (3 x 4) =
c) (-10) : 5 +(-2) x (-24) - 48=
d) 169 : (-13) x 2 : (-26) =
e) 144 : (- 4) - 72 : (-9) =
f) 559 : ( -13) + (- 721) :(-7) =
3 zad.
a) 45 x 58 +( - 45) x 58 =
b) 27 x 60 + (-26) x 60 =
c) 15 x ( -5)+ (-4) x 15 =
d) [ ( -50) + ( -49) + ( - 48)] x0 =
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1a)20
b)-60
c)-120
2a)-1616
b)-101
c)-2
d)-1
e)-28
f)60
3a)0
b)60
c)135
d)0
zadanie1
-4x(-5)=20
-4x(5)x(-3)=20x(-3)=-60
/4x(-5)x(-3)x(-2)=20x6=120
zadanie2
a)-1212:3x4=-404x4=-1616
b)-1212:(3x4)=-1212:12=(-101)
c)-10:5+(-2)x(-24)-48=-2+48-48=-2
d)169:(-13)x2:(-26)=-13x2:(-26)=-26:(-26)=1
e)144:(-4)-72:(-9)=-36-(-8)=-36+8=-32
f)559:(-13)+(-721):(-7)=-43+103=60
zadanie3
a)45x58+(-45)x58=2160+(-2160)=2160-2160=0
b)27x60+(-26)x60=1620-1560=60
c)15x(-5)+(-4)x15=-75+(-60)=-75-60=-135
d)[(-50)+(-49)+(-48)]x0=0