Quiz about potência-8º ano

Question 1

$$\left(\frac{2}{7}\right)^{-2}=?$$

Accepted Answer

$$\left(\frac{7}{2}\right)^2$$

Answer

$$\left(\frac{2}{7}\right)^2$$

Answer

$$\frac{14}{4}$$

Answer

$$\frac{4}{14}$$

Question 2

$$\left(3^{-3}\right)^{-2}=?$$

Accepted Answer

$$3^6$$

Answer

$$3^{-5}$$

Answer

$$\left(\frac{1}{3}\right)^6$$

Answer

$$\left(\frac{1}{3}\right)^5$$

Question 3

$$\frac{2^{15}}{2^7}=?$$

Accepted Answer

$$2^8$$

Answer

$$4^8$$

Answer

$$2^{22}$$

Answer

$$4^{22}$$

Question 4

$$\left(\frac{2}{3} ight)^{-5} imes\left(\frac{2}{3} ight)^3=$$

Accepted Answer

$$\left(\frac{3}{2}\right)^2$$

Answer

$$\left(\frac{3}{2}\right)^{-2}$$

Answer

$$\left(\frac{2}{3}\right)^2$$

Answer

$$\left(\frac{2}{3}\right)^{15}$$

Question 5

$$\left(\frac{5}{10} ight)^{-3} imes\left(\frac{4}{5} ight)^{-3}=$$

Accepted Answer

$$\left(\frac{2}{5}\right)^{-3}$$

Answer

$$\left(\frac{2}{5}\right)^9$$

Answer

$$\left(\frac{5}{10}\right)^9$$

Answer

$$\left(\frac{2}{5}\right)^{-6}$$

Question 6

$$\left(\frac{1}{3}\right)^0+2^3-5=$$

Accepted Answer

$$4$$

Answer

$$1$$

Answer

$$\left(\frac{1}{3}\right)$$

Answer

$$3$$

Question 7

$$\left(\frac{1}{5} ight)^{-7} imes5^{10}=$$

Accepted Answer

$$5^{17}$$

Answer

$$\left(\frac{1}{5}\right)^{17}$$

Answer

$$1^3$$

Answer

$$\left(\frac{1}{5}\right)^3$$

Question 8

Completa com >, < ou =

$$9^{-1}......3^{-2}$$

Accepted Answer

=

Answer

>

Answer

<

Question 9

Completa com >, < ou =

$$\left(-1\right)^{-5}......\left(-3\right)^0$$

Accepted Answer

<

Answer

>

Answer

=

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