Pregunta N° 1: Si A = 5 + (–4) + 5 y B = (–8) + 10 + (– 5), calcule A + B.
1 punto
A) 6
B) –3
C) 3
D) 4
E) 5
Pregunta N° 2: Si T = (–3) × 4 + 5 × 2 y R = (–5)(–3) + 4 × (–5), calcule T + R.
1 punto
A) 7
B) –7
C) 5
D) –5
E) 4
Pregunta N° 3: Si M = 4 × (–2) + 6 y N = 8 × (–3) + 28, calcule M + N.
1 punto
A) –2
B) 1
C) 4
D) 5
E) 2
Pregunta N° 4: Si A = 5 × (–4) – 2 × 5 y B = 20 + (–3)(–4), calcule A + B.
1 punto
A) 1
B) 2
C) 3
D) 4
E) 5
Pregunta N° 5: Calcule (–3)(–2) + 4 × (–2) + 5 × (–3) + 10.
1 punto
A) 8
B) 10
C) –7
D) 6
E) –6
AYUDAAAAAAAAAAAAAAAAAAAA!
Respuestas
1-c 2-b 3-e 4-b 5-c 6-. 7-c 8-c 9-d 10-c ... denada :)
Las respuestas de las operaciones dadas son:
N° 1:
A) 6 B) –3 C) 3 ✔ D) 4 E) 5
N° 2:
A) 7 B) –7 ✔ C) 5 D) –5 E) 4
N° 3:
A) –2 B) 1 C) 4 D) 5 E) 2 ✔
N° 4:
A) 1 B) 2 ✔ C) 3 D) 4 E) 5
N° 5:
A) 8 B) 10 C) –7 ✔ D) 6 E) –6
Resolución de las operaciones:
N°1: Si A = 5 + (–4) + 5 y B = (–8) + 10 + (– 5), calcule A + B.
A + B = 5 - 4 + 5 -8 +10 -5
= 6 - 8 +10 - 5
= -2 + 5
= 3
N°2: Si T = (–3) × 4 + 5 × 2 y R = (–5)(–3) + 4 × (–5), calcule T + R.
T + R = (-3) x 4 + 5 x 2 + (-5).(-3) + 4 x (-5)
= -12 + 10 +15 - 20
= -2 -5
= -7
N°3 : Si M = 4 × (–2) + 6 y N = 8 × (–3) + 28, calcule M + N.
M + N = 4 × (–2) + 6 + 8 × (–3) + 28
= - 8 + 6 - 24 + 28
= - 2 + 4
= 2
N°4: Si A = 5 × (–4) – 2 × 5 y B = 20 + (–3)(–4), calcule A + B.
A + B = 5 × (–4) – 2 × 5 + 20 + (–3)(–4)
= - 20 - 10 + 20 + 12
= - 30 + 32
= 2
N°5 : Calcule (–3)(–2) + 4 × (–2) + 5 × (–3) + 10.
(-3)(-2) + 4 x (-2) + 5 x (-3) + 10
= 6 - 8 - 15 + 10
= -2 -5
= -7
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