NÚMEROS ENTEROS:
1. Calcula:
a) 5 – 3 – 7 + 1 + 8
b) 2 – 3 + 4 + 1 – 8 + 2
c) 1 – 3 + 5 – 7 + 9 – 11
d) 2 + 4 – 6 – 8 + 10 – 12 + 14
2. Quita paréntesis:
a) a + (b + c)
b) a – (b + c)
c) a + (b – c)
d) a – (b – c)
3. Quita paréntesis y después opera:
a) 1 – (7 – 2 – 10) – (3 – 8)
b) (8 – 4 – 3) – (5 – 8 – 1)
c) (3 – 5) – (1 – 4) + (5 – 8)
d) 3 – (5 – 8) – (11 – 4) + (13 – 9)
4. Calcula operando primero dentro de los paréntesis:
a) (2 – 6 – 3) + (5 – 3 – 1) – (2 – 4 – 6)
b) (8 – 11 – 5) – (12 – 13) + (11 + 4)
c) 15 + (6 – 18 + 11) – (7 + 15 – 19) + (1 – 3 – 6)
5. Quita paréntesis y calcula:
a) 3 – [(5 – 8) – (3 – 6)]
b) 1 – (3 – [4 – (1 – 3)])
c) (2 + 7) – (5 – [6 – (10 – 4)])
6. Calcula:
a) (–7) · (+11)
b) (–6) · (–8)
b) (+5) · (+7) · (–1)
d) (–2) · (–3) · (–4)
7. Opera:
a) (–45) : (+3)
b) (+85) : (+17)
c) (+36) : (–12)
d) (–85) : (–5)
