
Quiz de Matemática
Authored by Osmarina M. Flores
Mathematics
7th Grade
Used 1+ times

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31 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Na Gincana de Matemática, um professor do 7º ano pediu aos seus alunos que mostrassem a placa com o maior divisor comum entre os números 28 e 52. Veja a placa levantada por quatro alunos: Pode-se afirmar que o único aluno que acertou foi:
Alex
Heitor
Levi
Robert
Answer explanation
The greatest common divisor (GCD) of 28 and 52 is 4. Robert correctly identified this value, while the other students did not. Therefore, Robert is the only student who got it right.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Selecione a alternativa em que todos os números são divisores de 45.
2, 3, 5, 9 e 45
3, 5, 8, 9 e 45
3, 5, 9, 15 e 45
3, 5, 9, 10 e 45
Answer explanation
The correct choice is 3, 5, 9, 15, and 45, as all these numbers divide 45 evenly. The other options include numbers like 2, 8, and 10, which are not divisors of 45.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Em uma aula de Educação Física, o professor calculou o IMC (Índice de Massa Corporal) de seus alunos, para isso, ele verificou o peso de cada um e escreveu no quadro. Sobre o peso desses alunos, é correto afirmar que:
todos são múltiplos de 2.
todos são múltiplos de 4.
apenas o peso de Karina não é múltiplo de 2.
todos os pesos registrados são múltiplos de 2 e 4.
Answer explanation
All recorded weights must be multiples of 2, as weight is typically measured in whole numbers. Since all multiples of 4 are also multiples of 2, the correct statement is that all recorded weights are multiples of 2 and 4.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A idade da minha irmã é um múltiplo de 7 maior que 30 e menor que 40. Qual é a idade da minha irmã?
34 anos
35 anos
37 anos
42 anos
Answer explanation
The multiples of 7 between 30 and 40 are 35 and 42. Since 42 is not less than 40, the only valid age for my sister is 35 years.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Escrevendo todos os divisores dos números 20, 25 e 40, Mário concluiu que o maior divisor comum entre esses três números é:
2
5
8
10
Answer explanation
The divisors of 20 are 1, 2, 4, 5, 10, 20; for 25 they are 1, 5, 25; and for 40 they are 1, 2, 4, 5, 8, 10, 20, 40. The common divisors are 1 and 5, making 5 the greatest common divisor.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual dos seguintes números é um divisor de 144?
7
10
12
14
Answer explanation
To determine if a number is a divisor of 144, we check if 144 can be divided by that number without a remainder. 144 ÷ 12 = 12, which is an integer, so 12 is a divisor. The other options do not divide evenly into 144.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O professor de Davi escreveu um número no quadro e apagou o último dígito. Sabendo que o número escrito é um múltiplo de 162, o dígito apagado foi:
0
2
4
8
Answer explanation
The number must be a multiple of 162. When the last digit is erased, the remaining number must still be a multiple of 162. Testing the options, only when the last digit is 4 does the remaining number remain a multiple of 162.
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