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Números naturais

Authored by ana custódio

Mathematics

6th Grade

Used 74+ times

Números naturais
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13 questions

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1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 464^6  pode escrever-se sob a forma:

 4+4+4+4+4+44+4+4+4+4+4  

 6+6+6+66+6+6+6  

 4×4×4×4×4×44\times4\times4\times4\times4\times4  

 6×6×6×66\times6\times6\times6  

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Dos números  2 , 5 , 7 , 9 , 11 , 152\ ,\ 5\ ,\ 7\ ,\ 9\ ,\ 11\ ,\ 15 , podemos dizer que

2 e 9 são primos.

5 e 11 são primos.

5 e 15 são primos.

7 e 9 são primos.

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A decomposição em fatores primos do número 70 é:

2×5×72\times5\times7

2×52×72\times5^2\times7

2×522\times5^2

23×5×72^3\times5\times7

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A fração  2×5×112×3×5×7\frac{2\times5\times11}{2\times3\times5\times7}  é equivalente a:

 117\frac{11}{7}  

 53\frac{5}{3}  

 1121\frac{11}{21}  

 25\frac{2}{5}  

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

O número  22×72^2\times7  admite, entre outros, os divisores: 


2 , 3 e 7

4 , 5 e 7

4 , 7 e 8

4 , 7 e 14

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

O máximo divisor comum de  23×32^3\times3  e  2×3×52\times3\times5  é:  

 2×32\times3  

 2×52\times5  

 2×3×52\times3\times5  

 23×32^3\times3  

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

O mínimo múltiplo comum de  23×32^3\times3  e  2×3×52\times3\times5   é: 

 23×52^3\times5  

 2×3×52\times3\times5  

 23×3×52^3\times3\times5  

 23×32^3\times3  

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