
REVISANDO DESCRITORES
Authored by PALOMA RODRIGUES
Mathematics
9th Grade
Used 2+ times

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12 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Lucas comprou uma televisão por R$ 750,00 para pagar em duas parcelas. A primeira parcela que corresponde a 40% do preço da televisão, ele pagou à vista. Quanto ele pagou pela primeira parcela?
280
300
450
710
Answer explanation
Para calcular uma porcentagem de um número, multiplicamos o valor pela porcentagem sobre 100.
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Sabrina quer comprar uma mochila que custa R$ 60,00, mas, para pagamento à vista, a loja oferece um desconto de 5%. Se ela optar pelo pagamento à vista, ela vai pagar:
30
55
57
59,7
Answer explanation
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A figura mostra os pontos P e Q que correspondem a números racionais e foram posicionados na reta numerada do conjunto dos racionais. Quais são os valores de P e Q, respectivamente?
P = - 0,2 e Q = – 0,3
P = - 0,3 e Q = – 0,2
P = - 0,6 e Q = – 0,7
P = - 0,7 e Q = – 0,6
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
– 4 e – 3.
– 3 e – 2.
2 e 3.
3 e 4.
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Eduardo resolveu a expressão -5 x (4) + 8 x 3 + (-9)² : 27, mas apagou o resultado pois achava que estava errado. Caso ele tenha acertado, qual resultado ele encontrou?
-87
1
7
47
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Qual a resposta correta para a solução da expressão:
0,74 + 0,5 –1,5
-0,64.
-0,26.
0,26.
0,64.
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A professora do 9º ano, corrigindo as avaliações da classe, viu que um aluno acertou 2/10 das questões. Qual a representação decimal desse número?
5
2,5
0,5
0,2
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