
Desafios de Matemática do 8º Ano
Mathematics
8th Grade

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Calcule 25% de 200.
25
50
75
100
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Se uma cidade tem uma população de 10.000 habitantes e uma área de 50 km², qual é a densidade demográfica?
100 hab/km²
200 hab/km²
300 hab/km²
400 hab/km²
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Uma loja oferece um desconto de 15% em um produto que custa R$ 200. Qual é o preço final do produto?
R$ 170
R$ 180
R$ 185
R$ 190
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Se 4 lápis custam R$ 8, quanto custarão 10 lápis?
R$ 16
R$ 18
R$ 20
R$ 22
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é a porcentagem de 30 em relação a 150?
10%
15%
20%
25%
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