
CONCURSO INTERNO DE MATEMATICA
Authored by Luis Ube
Mathematics
9th Grade
Used 3+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
CALCULA LA EXPRESIÓN ALGEBRAICA DEL ÁREA DEL SIGUIENTE JARDÍN
A= 2m2 - 4mn + 2n2
A= 2m2 + 4mn + 2n2
A= 2m2 + 4mn - 2n2
A= 2m2 - 4mn - 2n2
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
SI JUAN TIENE (2x+5) AÑOS Y MATHÍAS ES (x+1) AÑOS MAYOR QUE JUAN. ¿QUÉ EXPRESIÓN REPRESENTA EL PRODUCTO DE SUS EDADES?
2x2 + 7x + 5
2x2 - x + 5
2x2 + 7x - 5
2x2 - x - 5
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
DESCRIBE LA EXPRESIÓN ALGEBRAICA QUE REPRESENTA LAS ÁREAS PINTADAS DE COLOR ROJO Y FACTORICE SU RESPUESTA:
(x - a)
(x - a) b
2(x - a) b
(x - a)2 b
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
ANDREA QUIERE PINTAR LA PARED DE SU CUARTO, PERO NO EL BORDE SUPERIOR. ¿QUÉ EXPRESIÓN ALGEBRAICA REPRESENTA LA SUPERFICIE QUE QUIERE PINTAR?
9x - y2
9x4 + 9y
9x + y
9x4 - y2
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
UNA PISCINA RECTANGULAR ESTÁ RODEADA POR UN PASILLO ENLOSADO DE 1,5M DE ANCHO. SI LA PISCINA ES 10 MÁS LARGA QUE ANCHA, HALLAR:
· LA EXPRESIÓN QUE DA EL ÁREA DEL RECTÁNGULO QUE DELIMITA LA PISCINA
x2 + 10x
x2 - 10x
x - 10
x - 10x2
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
ELIGE LA FACTORIZACIÓN QUE NO CORRESPONDA A 200
8(45)
20(10)
40(5)
8(25)
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
COMPLETE LA SERIE DE LOS SIGUIENTES NÚMEROS CUADRÁTICOS: 1, 4, 9, 25, 36,___ , 64,___ .
2, 3
49, 81
49, 81
100, 3
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