Resolva as seguintes expressões
numéricas:
a) 5 . 3 – 30 =
b) 14 – 6 . 3 =
c) 15 . 4 – 80 =
d) – 50 + 11 . 5 =
e) – 48 – 6 . 7 =
f) 35 + (– 9) . (– 4) =
g) 18 – (– 6) . (– 2) =
h) (+ 8) . (– 8) + 64 =
i) 54 + (– 6) . (+ 9) =
j) 15 – (8 – 7) + (9 – 4) =
k) 12 – { – 3 + [1 + (+ 2 – 9) – 8] + 5} =
l) ( + 10 ).( – 12 ).( + 1 ).( – 3 ).( + 2 ) =
m) ( – 3 ).( - 2 ).( – 1 0).( + 4 ) =
n) ( – 2 ).( – 2 ).( – 2 ).( – 2 ) =
o) ( + 3 ).( + 3 ).( - 3 ).( - 3 ) =
p) ( - 1 ) . ( -12 ) . ( + 57 ) =
q) ( – 12 ) : ( – 3 ) =
r) ( – 48 ) : ( + 6 ) =
s) ( + 32 ) : ( +-16 ) =
t) ( + 40 ) : ( – 1 ) =
u) ( - 42 ) : ( + 6 ) =
Soluções para a tarefa
Resposta:
a) 5 . 3 – 30 = 15-30= -15
b) 14 – 6 . 3 = 14 - 18= -4
c) 15 . 4 – 80 = 60 -80= -20
d) – 50 + 11 . 5 = -50 +55= 5
e) – 48 – 6 . 7 = -48 -42= -90
f) 35 + (– 9) . (– 4) = 35+36= 71
g) 18 – (– 6) . (– 2) = 18 - (+12)= 18 -12= 6
h) (+ 8) . (– 8) + 64 = -64 +64= 0
i) 54 + (– 6) . (+ 9) = 54+ (-54)= 54-54=0
j) 15 – (8 – 7) + (9 – 4) = 15 - 1 +5= 19
k) 12 – { – 3 + [1 + (+ 2 – 9) – 8] + 5} =
12 – { – 3 + [1 + (-7) – 8] + 5} =
12 – { – 3 + [1 - 7 – 8] + 5} =
12 - {-3 + [-14] + 5} =
12 - {-3 - 14 + 5} =
12 - {-12} =
12 + 12 =
24
l) ( + 10 ).( – 12 ).( + 1 ).( – 3 ).( + 2 ) = (-120 )×(-6)= 720
m) ( – 3 ).( - 2 ).( – 1 0).( + 4 ) =-240
n) ( – 2 ).( – 2 ).( – 2 ).( – 2 ) = 16
o) ( + 3 ).( + 3 ).( - 3 ).( - 3 ) = 81
p) ( - 1 ) . ( -12 ) . ( + 57 ) = 684
q) ( – 12 ) : ( – 3 ) = 4
r) ( – 48 ) : ( + 6 ) = -8
s) ( + 32 ) : ( +-16 ) = É mais ou menos?
t) ( + 40 ) : ( – 1 ) = - 40
u) ( - 42 ) : ( + 6 ) = -7