Confira Exercícios Resolvidos Sobre Expressões Numéricas
1. Resolva as expressões numéricas:
a
) 2 + 8 – 3 – 5 + 15 =
Resposta:
2 + 8 – 3 – 5 + 15
=17
b) 12 + [35 - (10 + 2) +2] =
Resposta:
12 + [35 - (10 + 2) +2]
12 + [35 - 12 + 2]
12 + 25
37
c) [(18 + 3 · 2) ÷ 8 + 5 · 3] ÷ 6 =
Resposta:
[(18 + 3 · 2) ÷ 8 + 5 · 3] ÷ 6
[(18+6) ÷ 8 +15] ÷ 6
[24 ÷ 8 + 15] ÷ 6
[3+15] ÷ 6
18 ÷ 6
3
d) 37 + [-25 – (-11 + 19 – 4)] =
Resposta:
37 + [-25 – (-11 + 19 – 4)]
37 + [-25 - 4]
37 + -29
8
e) 60 ÷ {2 · [-7 + 18 ÷ (-3 + 12)]} – [7 · (-3) – 18 ÷ (-2) + 1] =
Resposta:
60 ÷ {2 · [-7 + 18 ÷ (-3 + 12)]} – [7 · (-3) – 18 ÷ (-2) + 1]
60 ÷ {2 · [-7 + 18 ÷ 9]} - [-21 + 9 +1]
60 ÷ {2 · [-7 + 2]} + 11
60 ÷ {2 · (-5)} + 11
60 ÷ (-10) + 11
-6 + 11
5
f) -8 + {-5 + [(8 – 12) + (13 + 12)] – 10} =
Resposta:
-8 + {-5 + [(8 – 12) + (13 + 12)] – 10}
-8 + {-5 + [-4 + 25] – 10}
-8 + {-5 + 21 – 10}
-8 + 6
-2
g) 3 – {2 + (11 – 15) – [5 + (-3 + 1)] + 8} =
Resposta:
3 – {2 + (11 – 15) – [5 + (-3 + 1)] + 8}
3 – {2 + (-4) – [5 + (-2)] + 8}
3 – {2 + (-4) – 3 + 8}
3 – {2 + (-4) – 3 + 8}
3 - 3
0
h) [-1 + (22 – 5 · 6)] ÷ (-5 + 2) + 1 =
Resposta:
[-1 + (22 – 5 · 6)] ÷ (-5 + 2) + 1
[-1 + (22 – 30)] ÷ (-3) + 1
[-1 + (-26)] ÷ (-3) + 1
-27 ÷ (-3) + 1
9 + 1
10
i) [√100 – (24 – 8) · 2 – 24] ÷ [22 – (-3 + 2)] =
Resposta:
[√100 – (24 – 8) · 2 – 24] ÷ [22 – (-3 + 2)]
[√100 – (16 – 8) · 2 – 24] ÷ [4 – (-3 + 2)]
[√100 – 8 · 2 – 24] ÷ [4 – (-1)]
[10 – 8 · 2 – 24] ÷ 5
[10 – 16 – 24] ÷ 5
-30 ÷ 5
-6
j) {[(8 · 4 + 3) ÷ 7 + (3 + 15 ÷ 5) · 3] · 2 – (19 – 7) ÷ 6} · 2 + 12 =
Resposta:
{[(8 · 4 + 3) ÷ 7 + (3 + 15 ÷ 5) · 3] · 2 – (19 – 7) ÷ 6} · 2 + 12
{[(32 + 3) ÷ 7 + (3 + 3) · 3] · 2 – (12) ÷ 6} · 2 + 12
{[35 ÷ 7 + 6 · 3] · 2 – 2} · 2 + 12
{[5 + 18] · 2 – 2} · 2 + 12
{23 · 2 – 2} · 2 + 12
{46 – 2} · 2 + 12
44 · 2 + 12
88 + 12
100
2. Resolva as expressões numéricas a seguir:
a)
Resposta:
b)
Resposta:
