
Revisão - 8º ano (matemática)
Authored by Regiane Ferreira
Mathematics
8th Grade

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8 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
O valor de é:
1
2
3
4
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
O valor da expressão é:
6
8
60
80
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Certo banco cobra juros simples de 3% ao mês para contas pagas em atraso. Gabriela pagou uma conta de R$ 50,00 com atraso de um mês. O valor total pago por Gabriela foi de:
R$ 51,00
R$ 51,40
R$ 51,50
R$ 51,70
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Resolva a equação: x + 5=20 - 4x
x = 3
x = 12
x = 3/5
x = 25
5.
MULTIPLE CHOICE QUESTION
5 mins • 2 pts
Na 7ª série, há 44 alunos entre meninos e meninas. A diferença entre o número de meninos e o de meninas é 10.Qual é o sistema de equações do 1º grau que melhor representa essa situação?
6.
MULTIPLE CHOICE QUESTION
5 mins • 2 pts
O par ordenado ( 4, -1 ) é solução da equação:
4x + y = 15
x - 4y = 12
3x + 2y = 11
0,5x - y = 2
7.
MULTIPLE CHOICE QUESTION
5 mins • 2 pts
A inequação 5x - 8 > 7x + 4 tem solução:
x > 6
x < 6
x < -6
x > -6
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