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Operações com racionais

Authored by Jéssica Souza

Mathematics

7th Grade

Used 27+ times

Operações com racionais
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15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 34×23=\frac{3}{4}\times\frac{2}{3}=  

 57\frac{5}{7}  

 98\frac{9}{8}  

 12\frac{1}{2}  

 34\frac{3}{4}  

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 35÷24=\frac{3}{5}\div\frac{2}{4}=  

 59\frac{5}{9}  

 620\frac{6}{20}  

 77\frac{7}{7}  

 35\frac{3}{5}  

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

Calcula a área da seguinte figura:

116m2\frac{1}{16}^{m^2}

48m2\frac{4}{8}m^2

14m2\frac{1}{4}m^2

116cm2\frac{1}{16}cm^2

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Ao dividir-se um fio com  83m\frac{8}{3}m  em porções de  19m\frac{1}{9}m , com quantos pedaços se fica? 

8

9

24

27

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 16\frac{1}{6}  dos discos do António são 9. Quantos discos tem o António?

45

36

54

72

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 Para completar a seguinte igualdade   34=27?\frac{3}{4}=\frac{27}{?}  falta o algarismo...

16

27

36

45

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Qual a forma irredutível do número racional -64/16 ?

-1/2

-2/4

-4

-2

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