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Desafios matemáticos

Authored by SINVAL NETO

Mathematics

9th Grade

CCSS covered

Desafios matemáticos
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57 questions

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1.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Resolva a equação: 2x + 5 = 17

x = 5

x = 6

x = 7

x = 12

2.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Qual é 25% de 320?

64

80

72

100

3.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Se 5 cadernos custam R$ 30,00, quanto custarão 8 cadernos, mantendo a proporção?

R$ 36,00

R$ 42,00

R$ 48,00

R$ 54,00

4.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Calcule: -7 + 12 - 5

0

2

5

-2

5.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Resolva a equação: 4x - 8 = 20

x = 6

x = 7

x = 8

x = 9

6.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Em um gráfico de pizza, 30% dos alunos preferem matemática. Se há 120 alunos, quantos preferem matemática?

24

30

36

40

7.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Se 3 metros de tecido custam R$ 45,00, quanto custam 7 metros?

R$ 95,00

R$ 105,00

R$ 90,00

R$ 120,00

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