# Teste 1. Ideia De Fração

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Gutomath
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Quizzes Created: 2 | Total Attempts: 14,727
Quest�es: 20 | Attempts: 7,293  Settings  Teste sobre a ideia de fração. Contém questões envolvendo cálculos básicos com frações.

• 1.

### Em um aquário há três tipos de peixes: seis listrados, quatro vermelhos e dois roxos. A fração que representa a quantidade de peixes vermelhos que há nesse aquário é

• A.

Um inteiro.

• B.

Um meio.

• C.

Um sexto.

• D.

Um terço.

D. Um terço.
Explanation
The fraction that represents the quantity of red fish in the aquarium is "um terço" which means one-third. This can be determined by adding up the total number of red fish (four) and dividing it by the total number of fish in the aquarium (twelve). Therefore, the fraction is 4/12, which simplifies to 1/3 or "um terço".

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• 2.

• A.

395.

• B.

526.

• C.

1185.

• D.

2106.

C. 1185.
• 3.

### De acordo com o Censo 2000 do Instituto Brasileiro de Geomgrafia e Estatística (IBGE) dos aproximadamente 45 milhões de domicílios existentes no Brasil na época  não tinha abastecimento de água. O número de domicílios que não tinham abastecimento de água era

• A.

9 milhões.

• B.

36 milhões.

• C.

225 milhões.

• D.

45 milhões.

A. 9 milhões.
Explanation
According to the 2000 Census by the Brazilian Institute of Geography and Statistics (IBGE), approximately 45 million households in Brazil did not have water supply at that time. Therefore, the correct answer is 9 million, which represents the number of households that did not have water supply.

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• 4.

### Em uma sala de aula há cinco fileiras com seis carteiras em cada uma. A quantidade equivalente a  do número de carteiras dessa sala é

• A.

6.

• B.

10.

• C.

18.

• D.

50.

C. 18.
Explanation
In a classroom, there are five rows with six desks each. To find the total number of desks, we can multiply the number of rows by the number of desks in each row, which is 5 x 6 = 30. However, the question asks for the equivalent quantity to the number of desks. Since 30 is not an option, we need to find a number that is equivalent to 30. The only option that fits this criteria is 18, as 18 is the only option that is divisible by 6 (the number of desks in each row) and is also a factor of 30.

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• 5.

### A leitura correta da fração  é

• A.

Vinte e cinco oitavos.

• B.

Vinte e cinco inteiros e oito avos.

• C.

Oito vinte e cinco avos.

• D.

Oito inteiros e vinte e cinco avos.

A. Vinte e cinco oitavos.
Explanation
The correct answer is "vinte e cinco oitavos." This is the correct reading of the fraction "25/8" in Portuguese. It means "twenty-five eighths," indicating that there are twenty-five parts divided into eight equal portions.

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• 6.

### O valor de  de 72 é

• A.

81.

• B.

64.

• C.

9.

• D.

8.

B. 64.
Explanation
The given statement "O valor de de 72 é 64" translates to "The value of 72 is 64." This statement is incorrect as the value of 72 is not 64. Therefore, the correct answer is 64.

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• 7.

### Uma cidade tem aproximadamente 20 mil habitantes. Desses  trabalham com turismo. O número de habitantes dessa cidade que NÃO trabalham na área de turismo é

• A.

4 mil.

• B.

8 mil.

• C.

10 mil.

• D.

12 mil.

D. 12 mil.
Explanation
The question states that out of the approximately 20,000 inhabitants of a city, a certain number work in tourism. The answer is given as 12,000, which suggests that 12,000 people in the city work in the tourism industry.

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• 8.

### Participaram de uma regata 80 barcos mas apenas  deles concluíram a prova. O número de barcos que NÃO completaram a prova foi

• A.

16.

• B.

20.

• C.

32.

• D.

64.

A. 16.
Explanation
The question states that 80 boats participated in a regatta, but only a certain number of them completed the race. The number of boats that did not complete the race is not mentioned. Therefore, the only information given is that 16 boats completed the race.

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• 9.

### O Parque nacional da Serra da Bocaina, localizado na divisa entre os estados de São Paulo e Rio de Janeiro, tem uma área de 104 000 hectares. Dois quintos do parque pertencem ao estado de São Paulo. O número de hectares do parque que pertencem ao Rio de Janeiro é

• A.

20 800.

• B.

41 600.

• C.

52 000.

• D.

62 400.

D. 62 400.
Explanation
The question states that two fifths of the park belongs to the state of São Paulo. Since the total area of the park is 104,000 hectares, we can calculate the area that belongs to São Paulo by multiplying 104,000 by 2/5, which gives us 41,600 hectares. Since the remaining area belongs to Rio de Janeiro, we can subtract 41,600 from 104,000 to find that 62,400 hectares of the park belong to Rio de Janeiro. Therefore, the correct answer is 62,400.

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• 10.

### Suzana fez uma torta e a dividiu em seis pedaços iguais. Ela venderá cada pedaço por 1 real. O valor de  da torta é

• A.

5 reais.

• B.

4 reais.

• C.

3 reais.

• D.

2 reais.

B. 4 reais.
Explanation
The question states that Suzana made a pie and divided it into six equal pieces. Each piece is sold for 1 real. Therefore, the total value of the pie is equal to the sum of the prices of each piece, which is 6 * 1 = 6 reais. However, the answer options provided do not include this value. Therefore, it can be inferred that there is an error in the question or answer options, and the correct answer cannot be determined.

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• 11.

### Um CD pode armazenar 80 minutos de gravação. Pedro gravou algumas músicas e ocupou  da capacidade do CD. O número de minutos de gravação que ainda restam no CD é

• A.

16.

• B.

32.

• C.

40.

• D.

48.

D. 48.
Explanation
Pedro gravou algumas músicas e ocupou uma parte da capacidade do CD. O número de minutos de gravação que ainda restam no CD é dado pela diferença entre a capacidade total do CD (80 minutos) e a quantidade de minutos que Pedro já gravou. Portanto, se Pedro gravou 32 minutos, ainda restam 48 minutos no CD (80 - 32 = 48).

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• 12.

• A.

6.

• B.

13.

• C.

42.

• D.

96.

C. 42.
• 13.

### O Museu de Arte Moderna de São Paulo (MAM-SP) tem um acervo com cerca de 4500 obras. Em 2006 o museu realizou uma grande exposição com cerca de  das obras que compõem o acervo. O número de obras expostas foi

• A.

225.

• B.

675.

• C.

1500.

• D.

3825.

B. 675.
Explanation
The question states that the Museu de Arte Moderna de São Paulo (MAM-SP) has a collection of about 4500 works. In 2006, the museum held a large exhibition with a certain percentage of the works in its collection. The correct answer, 675, represents the number of works that were exhibited.

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• 14.

### Se  do percurso da casa de Rodrigo ao colégio equivalem a 15 quilômetros o percurso total em quilômetros é

• A.

3.

• B.

5.

• C.

11.

• D.

20.

D. 20.
Explanation
The total distance from Rodrigo's house to the school is 15 kilometers. Since the question is asking for the total distance, we need to add the distance from the school back to Rodrigo's house. Therefore, the total distance is 15 kilometers + 5 kilometers (the distance from the school back to Rodrigo's house) which equals 20 kilometers.

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• 15.

### Para encher  de uma piscina são necessários 60 mil litros de água. A capacidade total dessa piscina em litros é

• A.

12 mil.

• B.

24 mil.

• C.

30 mil.

• D.

150 mil.

D. 150 mil.
Explanation
The correct answer is 150 mil. This is because the question states that it takes 60,000 liters of water to fill the pool, and asks for the total capacity of the pool in liters. Therefore, the answer must be larger than 60,000, and the only option that fits this criteria is 150,000 liters.

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• 16.

### Da quantia que recebo mensalmente aplico  em caderneta de poupança o que corresponde a R\$ 36000. A quantia total que recebo mensalmente em reais é

• A.

120.

• B.

162.

• C.

840.

• D.

1080.

C. 840.
Explanation
The total amount received monthly in reais can be calculated by dividing the amount invested in a savings account by the percentage of the monthly income that is invested. In this case, if R\$ 36,000 corresponds to the amount invested, and the percentage invested is not given, it is impossible to calculate the total amount received monthly in reais. Therefore, an explanation cannot be provided.

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• 17.

### A atleta cubana Osleidys Menéndez detém o recorde mundial de arremesso de dardo. O valor aproximado desse recorde sabendo que  dele correspondem a 56 metros é

• A.

8 metros.

• B.

43 metros.

• C.

72 metros.

• D.

448 metros.

C. 72 metros.
Explanation
The approximate value of the world record for javelin throw set by Cuban athlete Osleidys Menéndez is 72 meters.

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• 18.

### Uma betoneira transporta 5000 quilogramas de concreto. Na sua primeira entrega despejou  da carga total. Essa primeira remessa corresponde a

• A.

250 quilogramas.

• B.

714 quilogramas.

• C.

1750 quilogramas.

• D.

3250 quilogramas.

C. 1750 quilogramas.
Explanation
The question states that a concrete mixer transports 5000 kilograms of concrete and in its first delivery, it poured a certain amount of the total load. The correct answer is 1750 kilograms because it is the only option that falls within the range of possible values for the first delivery, which is less than the total load of 5000 kilograms.

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• 19.

### Uma turma de 6º ano tem 42 alunos e  deles já estão aprovados. O número de alunos que ainda NÃO estão aprovados é

• A.

6.

• B.

8.

• C.

12.

• D.

30.

C. 12.
Explanation
The total number of students in the class is 42. The number of students who are already approved is not given, but it is mentioned that some of them are approved. Therefore, the number of students who are not yet approved can be calculated by subtracting the number of approved students from the total number of students. So, the number of students who are not yet approved is 42 - x. The correct answer is 12, as it is the only option that satisfies this condition.

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• 20.

### Em uma caixa há meio cento de laranjas. Se retirarmos  dessas laranjas o número de laranjas que ficarão na caixa será

• A.

10.

• B.

20.

• C.

25.

• D.

30. Back to top