
Atividade avaliativa 8° ano 2. trimestre
Mathematics
8th Grade
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10 questions
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1.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
No aniversário de 4 anos de Júlio, Ricardo e seus três primos discutiam as suas idades e Ricardo afirmou: “A minha idade corresponde a 3 vezes a idade do Júlio, vezes a idade de Marcos, vezes o quadrado da idade de Rafael”.
Chamando de X a idade de Marcos e Y a idade de Rafael, que monômio representa a idade de Ricardo?
4xy.
4xy2.
12x2y
12xy2.
2.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Qual o grau do monômio 3x2y4z?
5
6
7
8
3.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Qual é a forma reduzida do polinômio 2x² - 5x³ + 3x - 5x² + 7x - 3 + 2x + 8?
5x3 + 7x2 + 12x – 5.
5x3 – 3x2 + 12x + 5.
– 5x3 – 3x2 + 12x + 5.
– 5x3 + 3x2 + 12x – 11.
4.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Considere os polinômios a seguir:
A = 6x³ + 3x² + 2y² + 5
B = – 5x² + 2y² + 1
C = x³ – 2x² + y²
O valor da soma A + B – C é igual a:
6x³ + 4x2 - 3y² + 6.
5x³ + 4x2 + 3y² + 6.
5x³ - 6x2 + 6.
5x³ + 3y² + 6.
5.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Dados os polinômios A = 9x² + 6x + 1 e
B = 3x + 1,
o valor de A : B
é:
6x + 5.
6x + 1.
3x + 1.
3x – 1.
6.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
O perímetro do retângulo
4x+2
8x+4
8x-4
4x-2
7.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Na figura, são mostrados dois retângulos, A e B, com as respectivas dimensões.
O polinômio que representa o perímetro da região formada pela união dos retângulos A e B é:
5x + 80
5x + 100
10x + 80
10 x + 100
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