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Potências de expoente inteiro-8ºA

Authored by Teresa Pinto

Mathematics

8th Grade

Used 11+ times

Potências de expoente inteiro-8ºA
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10 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

   21   \ \ 2^{-1\ \ \ ^{ }}  também pode ser representado por: 

-2

 12-\frac{1}{2}  

 12\frac{1}{2}  

2

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 (14)2\left(\frac{1}{4}\right)^2  é igual a :

 18\frac{1}{8}  

 28\frac{2}{8}  

 116\frac{1}{16}  

 116-\frac{1}{16}  

3.

MULTIPLE SELECT QUESTION

1 min • 1 pt

Qual das seguintes potências representa um número positivo.

 (4)1\left(-4\right)^{-1}  

 (2)2\left(-2\right)^{-2}  

 (5)21\left(-5\right)^{21}  

 (0,5)1\left(-0,5\right)^{-1}  

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 (67)2\left(-\frac{6}{7}\right)^{-2}  é igual a :

 4936\frac{49}{36}  

 1214\frac{12}{14}  

 3649\frac{36}{49}  

 1412\frac{14}{12}  

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Em qual da seguintes opções se encontra em linguagem matemática a expressão : " o triplo do inverso de 5/4"

 3×543\times\frac{5}{4}  

 3×(54)13\times\left(\frac{5}{4}\right)^{-1}  

 3543-\frac{5}{4}  

 3×(54)3\times\left(-\frac{5}{4}\right)  

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

  (12)3\ \left(-\frac{1}{2}\right)^{-3}   é igual a:

 6-6  

 16-\frac{1}{6}  

 8-8  

 18-\frac{1}{8}  

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

  (4%)1 \ \left(4\%\right)^{-1}\  pode ser representado por:

40%

400

25

4

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