Numeros Racionais/Reais

Numeros Racionais/Reais

8th Grade

11 Qs

quiz-placeholder

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Numeros Racionais/Reais

Numeros Racionais/Reais

Assessment

Quiz

Mathematics

8th Grade

Hard

Created by

daniela doce

Used 69+ times

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11 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Qual o maior?

2.3×1052.3\times10^{-5}

5.4×1065.4\times10^{-6}

3.7×1053.7\times10^{-5}

1.1×1041.1\times10^{-4}

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

 (9.84×1015)×(1.23×1015)\left(9.84\times10^{15}\right)\times\left(1.23\times10^{15}\right) 
 =(9.84×1.23)×1015=\left(9.84\times1.23\right)\times10^{15}  
 

verdadeiro

falso

3.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

 (9.84×1015)÷(1.23×1015)\left(9.84\times10^{15}\right)\div\left(1.23\times10^{15}\right) 
 =9.84÷1.23=9.84\div1.23  

verdadeiro

falso

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

 1.3×107>4.8×1061.3\times10^7>4.8\times10^6  

verdadeiro

falso

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

 (34) 2 ×(34) 5\left(-\frac{3}{4}\right)\ ^{2\ }\times\left(-\frac{3}{4}\right)\ ^{-5}  

 (34) 3\left(-\frac{3}{4}\right)\ ^{-3}  

 (34) 2\left(-\frac{3}{4}\right)\ ^{-2}  

 (34) 2\left(-\frac{3}{4}\right)\ ^2  

 (43)3\left(-\frac{4}{3}\right)^{-3}  

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

 (14)4÷(13)4×(34)5\left(-\frac{1}{4}\right)^4\div\left(-\frac{1}{3}\right)^4\times\left(\frac{3}{4}\right)^{-5}  

 916\frac{9}{16}  

 34\frac{3}{4}  

 916-\frac{9}{16}  

 43\frac{4}{3}  

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Quanto é 20% é  2×101+6×101+5×1022\times10^1+6\times10^{-1}+5\times10^{-2}  

 0.2×20.0650.2\times20.065  

 0.02×20.650.02\times20.65  

 0.2×20.650.2\times20.65  

 0.02×26.50.02\times26.5  

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