Porcentagens, e medidas de tendência central
Quiz
•
Mathematics
•
2nd Grade
•
Practice Problem
•
Medium
SIRLEI ROCHA
Used 4+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Calcule o acréscimo de 20% em um valor de R$100.
R$110
R$105
R$120
R$130
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Qual é o desconto de 15% em um produto que custa R$80?
R$16
R$10
R$14
R$12
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Se a média aritmética de três números é 15, e dois deles são 10 e 20, qual é o terceiro número?
5
25
15
18
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Se um aluno obteve as notas 6, 8, 7 e 9 em quatro disciplinas, qual é a média aritmética dessas notas?
7.5
8.0
8.5
9.0
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
O consumo médio mensal de água da residência dos alunos nestes seis meses foi de:
13,83 m³
12 m³
15 m³
14 m³
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Se um produto teve um aumento de 25% e depois um desconto de 10%, qual foi o percentual final de aumento ou desconto?
22.5%
20%
15%
30%
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Em uma sapataria durante um dia foram vendidos os seguintes números de sapato: 34, 39, 36, 35, 37, 40, 36, 38, 36, 38 e 41. Qual o valor da moda desta amostra?
35
36
34
39
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