
prova matemática
Mathematics
8th Grade

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10 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Identifique o número racional que está localizado entre -1 e 0 na reta numérica.
-0.5
-1.5
-0.2
-0.8
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Qual é a representação decimal do número racional 3/4 na reta numérica?
0.5
0.25
1.25
0.75
3.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Ordene os números racionais -2, 1/3, 1, 4/5, e 3 em ordem decrescente na reta numérica.
3, 4/5, 1, 1/3, -2
4/5, 1, 3, 1/3, -2
1, 3, 4/5, 1/3, -2
3, 1, 4/5, 1/3, -2
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Qual é a representação decimal do número racional -1/2 na reta numérica?
-0.5
-1.5
-0.2
-0.25
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Um grupo de 15 pessoas é formado por 8 engenheiros, 5 médicos e os demais são matemáticos. Qual é a fração do grupo de pessoas representa pelos matemáticos?
3/15
2/15
1/15
13/15
1/5
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Para somar frações com o mesmo denominador, temos que somar os numeradores e...
Somar os denominadores
Subtrair os denominadores
Repetir o denominador
Multiplicar os denominadores
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Paulo e Maria comeram uma pizza juntos. Paulo comeu 5/8 da pizza e Maria comeu 2/8 da pizza. Qual a fração que representa quanto eles comeram juntos?
3/8
1/2
7/8
1/8
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