
Matemáticas
Authored by Johanna Medrano
Mathematics
7th Grade
Used 5+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
El resultado de multiplicar (5x-4) (5x+4) es:
25x2 – 16
25x2-20x+8
25x2-8
25x2+20x-8
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hallar la suma de: 7a-4b+5c; -7a+4b-6c
-b
-c
-a
-2a
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
En una calle se están instalando dos semáforos: uno de ellos se pondrá en verde cada 3 minutos y el otro, cada 5 minutos. Una vez se conectan los semáforos, ¿cuánto tiempo tardarán en ponerse en verde al mismo tiempo por primera vez?
17
15
25
68
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Un barco parte cada 12 días y otro barco cada 30, si salieran juntos del mismo lugar. ¿Qué día volverán a partir del puerto?
74
28
90
36
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuál es el resultado de la siguiente operación?
(-7-9-2)=
18
5
10
-18
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuál es el resultado de sumar 3/5+1/2?
12/9
11/10
7/9
13/11
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuánto es 9a-3a+5a?
12a
9a
15a
11a
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