
Operações Matemáticas
Quiz
•
Mathematics
•
9th Grade
•
Practice Problem
•
Hard
ROSEMARA GOES
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10 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 2 pts
Os números racionais são aqueles que podem ser escritos na forma de fração. Observe o número racional abaixo.
0,3333.......
A fração geratriz dessa dízima periódica é:
2/3
1/3
1/9
1/33
2.
MULTIPLE CHOICE QUESTION
5 mins • 2 pts
Em qual das alternativas a seguir têm-se um subconjunto de Z?
a) {-3, -2, -1, 0, 1, 2}.
b) {0,5; 1; 1,5; 2; 2,5; 3}.
c) {1/3, ¼, 1/5, 0, -1/3, -1/4}.
d) {-0,1; 0; 0,1; 0,2; 0,3}.
3.
MULTIPLE CHOICE QUESTION
5 mins • 2 pts
(UEL) Observe os seguintes números:
a. 2,212121...
b. 3,212223...
c. π/5
d. 3,1416
e. √- 4
qual a alternativa que identifica os números irracionais.
a e b
a e d
b e c
b e e
c e e
4.
MULTIPLE CHOICE QUESTION
5 mins • 2 pts
Uma expedição de mergulho acaba de atracar em uma região litorânea. Um mergulhador já desceu 12 m a partir da superfície. Na cabine do navio, que se situa a 5 m da superfície, o piloto observa as atividades e a vista do oceano. Em relação ao mergulhador, qual a distância do piloto do navio?
17 m
12 m
-12 m
-17 m
5.
MULTIPLE CHOICE QUESTION
5 mins • 2 pts
Realize a operação: (-3) + 2 * (-4)
-7
-5
1
-11
6.
MULTIPLE CHOICE QUESTION
5 mins • 2 pts
Simplifique a expressão: 3/4 + 1/2
2/3
7/4
1/3
5/4
7.
MATCH QUESTION
5 mins • 2 pts
Represente as frações na forma decimal.
5,875
a) 12/5
2,4
b) 47/8
2,25
c) 9/4
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