1) Calcule o valor das expressões :
a) 2³ x 5 + 3² =
b) 70⁰+ 0⁷⁰ - 1 =
c) 3 x 7¹ - 4 x 5⁰ =
d) 3⁴- 2⁴: 8 – 3 x 4 =
e) 5² + 3 x 2 – 4 =
f) 5 x 2² + 3 – 8 =
g) 5² - 3 x 2² - 1 =
h) 16 : 2 – 1 + 7² =
2) calcule o valor das expressões:
a) 5² : ( √25 +1 -1)+ √16 x 2 =
b) (3 +1)² +2 x 5 - √100⁰ =
c) 3²: ( 4 – 1) + √9 x 2² =
d) 70 –[ 5 x (2² : 4) + 3²] =
e) ( 7 + 4) x ( 3² - 2³) =
f) 5² + √64 - 2 x (√9 + 9) =
g) 6² : 3² + 4 x 10 – 12 =
h) (7² - 1 ) : 3 + √4 x √25 =
Respostas
Resposta:
1) Calcule o valor das expressões :
a) 2³ x 5 + 3² =
8 x 5 + 9
40 + 9
49
b) 70⁰+ 0⁷⁰ - 1 =
1 + 0 - 1
1 - 1
0
c) 3 x 7¹ - 4 x 5⁰ =
3 x 7 - 4 x 1
21 - 4
17
d) 3⁴- 2⁴: 8 – 3 x 4 =
81 - 16:8 - 12
81 - 2 - 12
79 - 12
67
e) 5² + 3 x 2 – 4 =
25 + 6 - 4
31 - 4
27
f) 5 x 2² + 3 – 8 =
5 x 4 + 3 - 8
20 - 5
15
g) 5² - 3 x 2² - 1 =
25 - 3 x 4 - 1
25 - 12 -1
13 - 1
12
h) 16 : 2 – 1 + 7² =
8 - 1 + 49
7 + 49
56
2) calcule o valor das expressões:
a) 5² : ( √25 +1 -1)+ √16 x 2 =
25 : ( 5 + 0) + 4 x 2
25 : 5 + 8
5 + 8
13
b) (3 +1)² +2 x 5 - √100⁰ =
(4)² + 10 - √1
16 + 10 - 1
26 - 1
25
c) 3²: ( 4 – 1) + √9 x 2² =
9 : 3 + 3 x 4
3 + 12
15
d) 70 –[ 5 x (2² : 4) + 3²] =
70 - [5 x (4 : 4) + 9]
70 - [5 x 1 + 9]
70 - [5 + 9]
70 - 14
56
e) ( 7 + 4) x ( 3² - 2³) =
11 x (9 - 8)
11 x 1
11
]
f) 5² + √64 - 2 x (√9 + 9) =
25 + 8 - 2 x (3 + 9)
33 - 2 x 12
33 - 24
9
g) 6² : 3² + 4 x 10 – 12 =
36 : 4 + 40 - 12
9 + 40 -12
49 - 12
37
h) (7² - 1 ) : 3 + √4 x √25 =
(49 - 1) : 3 + 2 x 5
48 : 3 + 10
16 + 10
26
Explicação passo-a-passo: