
Equações, Razão e proporção
Authored by Liriam Taniguchi
Mathematics
1st Grade
Used 29+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A balança abaixo está em equilíbrio, isto é, o “peso” dos pratos é igual. Considere que cada bolinha tem massa de 1 quilograma e que x representa a massa de cada caixa. Então, a sentença matemática que representa a igualdade das massas dos pratos e o valor da massa x de cada caixa são, respectivamente:
a) 7 – x = 4 , logo x = 3
b) 7 + x = 2 + x, logo x = 9
c) 7 + x = 2 + 2x, logo x = 5
d) 7 + x = 2 + 2x, logo x = 9
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Um número adicionado a 20 é igual a 32. Que número é esse?
12
15
17
18
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
O dobro de um número menos o próprio número é igual a 5. A resposta da equação que modela essa situação é?
5
7
9
10
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Considere a situação a seguir:
No treino de vôlei a cada 10 saques, Cláudia acertou 9.
Qual é a razão entre o número de saques que deram certo com o total de saques de Cláudia?
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Calcule o valor de x na proporção:
5
4
3
2
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Na Escola do Bairro, para cada 4 meninas há 5 meninos estudando. Se há 580 meninos matriculados, quantos alunos estudam na Escola do Bairro?
464
1044
725
2320
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Qual o valor de Y para que esta seja uma proporção?
y=45
y=50
y=55
y=60
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