Calcule as expressões , apresentar os cálculos .
a) (2 . 3 – 4) . 2 + 10 : 5 =
b) [16 : 8 + (4 : 2 + 2 . 1) . 2 ] – 5 =
c) (4 . 2 – 3 . 1) . 2 + 18 : 9 + 24 : 4 =
d) 21 : 7 + (5 . 1 – 2 . 2) . 5 + 10 =
e) [(5 + 12) – 6] . 2 + 45 : 5 + 1=
f) 20 : 4 + 6 : 3 + (3 . 4 – 9 . 1) . 2 =
g) [14 + (4 . 5 – 3 . 6) . 3] – 18 : 9 =
h) (3 . 6 – 7 . 2).3 + (16 : 8 – 12 : 12) . 6 =
i) 8 + 63 : (21 : 7 + 6) + 2 . 10 =
j) [10 + 6 . 4 + (15 : 3 + 21 : 7) . 2] – 5 . 10 =
Soluções para a tarefa
Resposta:
a) (2 . 3 – 4) . 2 + 10 : 5 =
2 . 2 + 10 : 5 =
4 + 2 =
6
b) [16 : 8 + (4 : 2 + 2 . 1) . 2 ] – 5 =
[16 : 8 + 4 . 2] - 5 =
10 - 5 =
5
c) (4 . 2 – 3 . 1) . 2 + 18 : 9 + 24 : 4 =
5 . 2 + 18 : 9 + 24 : 4 =
10 + 2 + 6 =
18
d) 21 : 7 + (5 . 1 – 2 . 2) . 5 + 10 =
21 : 7 + 1 . 5 + 10 =
3 + 5 + 10 =
18
e) [(5 + 12) – 6] . 2 + 45 : 5 + 1=
[17 - 6] . 2 + 45 : 5 + 1 =
11 . 2 + 45 : 5 + 1 =
22 + 9 + 1 =
32
f) 20 : 4 + 6 : 3 + (3 . 4 – 9 . 1) . 2 =
20 : 4 + 6 : 3 + 3 . 2 =
5 + 2 + 6 =
13
g) [14 + (4 . 5 – 3 . 6) . 3] – 18 : 9 =
[14 + 2 . 3] - 18 : 9 =
[14 + 6] - 18 : 9 =
20 - 2 =
18
h) (3 . 6 – 7 . 2).3 + (16 : 8 – 12 : 12) . 6 =
4 . 3 + 1 . 6 =
12 + 6 =
18
i) 8 + 63 : (21 : 7 + 6) + 2 . 10 =
8 + 63 : 9 + 2 . 10 =
71 : 9 + 2 . 10 =
7,89 + 20 =
27, 89
j) [10 + 6 . 4 + (15 : 3 + 21 : 7) . 2] – 5 . 10 =
[10 + 6 . 4 + 8 . 2] - 5 . 10 =
[10 + 24 + 16] - 5 . 10 =
50 - 5 . 10 =
50 - 50 =
0