Quiz about Revisão de Potenciação e radiciação - 8º ano

Question 1

Calcule o valor de $$\left(-\frac{2}{5}\right)^{-2}$$

Accepted Answer

25/4

Answer

-0.4

Answer

2.5

Answer

25/2

Question 2

Calcule o valor de $$\left(\frac{3}{4}\right)^{-3}$$

Accepted Answer

64/27

Answer

4/3

Answer

3/4

Answer

27/64

Question 3

Calcule o valor de $$\left(\frac{1}{2}\right)^{-2}$$

Accepted Answer

4

Answer

0.5

Answer

2

Answer

0.25

Question 4

Calcule o valor de $$2^3-2^{-2}+2^5-2^{-3}+2^0$$

Accepted Answer

40.625

Answer

15.125

Answer

25.75

Answer

30.5

Question 5

Calcule o valor de $$\left(\frac{2}{3}\right)^{-2}$$

Accepted Answer

9/4

Answer

2/3

Answer

4/9

Answer

3/2

Question 6

Calcule o valor de $$\left(\frac{5}{6}\right)^{-1}$$

Accepted Answer

6/5

Answer

5/6

Answer

1.2

Answer

0.833

Question 7

Calcule o valor de $$\left(\frac{3}{5}\right)^{-2}$$

Accepted Answer

25/9

Answer

9/25

Answer

5/3

Answer

3/5

Question 8

Qual o valor da raiz quadrada de 1089 ?

Accepted Answer

33

Answer

30

Answer

36

Answer

40

Question 9

Calcule o valor de $$\left(\frac{4}{7}\right)^{-2}$$

Accepted Answer

49/16

Answer

4/7

Answer

7/4

Answer

16/49

Question 10

Calcule o valor de $$\left(\frac{5}{8}\right)^{-3}$$

Accepted Answer

512/125

Answer

8/5

Answer

125/512

Answer

5/8

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