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Zadanie 7.25 / strona 25 zbiór zadań
Oblicz :
a) (-5) + 4 - (-12) + (-9) =
b) (-2) razy (-4) - 6 =
c) (-36) : 4 + (-4) =
d) 8 razy (-2) + (-6) : (-3) =
e) 6 razy [ -5 razy 2 + (-4) : (-2) ] =
f) { 72 - [ (-36) : (-9) - (-24) razy (-1) ] } : (-20) =
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a)(-5)+4-(-12)+(-9)=-5+4+12-9=2
b) (-2) razy (-4)-6=8-6=2
c) (-36):4+(-4)=-9-4=-13
d) 8 razy (-2)+(-6):(-3)= -16+2=-14
e) 6 razy [-5 razy 2+(-4):(-2)]=6 razy ( -10+2)=6 razy (-8)=-48
f) { 72 -[(-36):(-9)-(-24) razy (-1)]} : (-20)= 72-[ 4-24]=72+20=92