Enteros - Cepasanfrancisco.edurioja.org

4Soluciones a los ejercicios y problemas
a) –1 – 1 = –2 b) –1 – 2 = –3 c) –2 – 3 = –5
d) –2 – 5 = –7 e) –4 – 3 = –7 f) –7 – 1 = –8
g) –6 – 6 = –12 h) –10 – 2 = –12 i) –3 – 12 = –15
11 Calcula.
a) +2 – 7 + 5 b) +12 – 5 – 8
c) 13 – 9 + 5 – 7 d) 6 – 8 – 6 + 5 + 4 – 6
e) –3 – 5 + 2 – 1 – 7 + 4 f) –8 – 7 + 2 + 9 – 10 + 18
a) +2 – 7 + 5 = 7 – 7 = 0 b) +12 – 5 – 8 = 12 – 13 = –1
c) 13 – 9 + 5 – 7 = 18 – 16 = +2
e) –3 – 5 + 2 – 1 – 7 + 4 = 6 – 16 = –10
f) –8 – 7 + 2 + 9 – 10 + 18 = 29 – 25 = 4
d) 6 – 8 – 6 + 5 + 4 – 6 = 15 – 20 = –5
12 Quita paréntesis y opera.
a) (+3) – (+8) b) (–9) + (–6) c) (–7) – (–7) – (+7)
d) (–11) + (+8) – (–6) e) (+15) – (–12) – (+11) + (–16)
f) (–3) – (–2) – (+4) + (–7) + (+8)
a) (+3) – (+8) = 3 – 8 = –5
b) (–9) + (–6) = –9 – 6 = –15
c) (–7) – (–7) – (+7) = –7 + 7 – 7 = –7
g) (+11) – (+7) + (–13) – (–20) + (–11)
d) (–11) + (+8) – (–6) = –11 + 8 + 6 = 14 – 11 = 3
e) (+15) – (–12) – (+11) + (–16) = 15 + 12 – 11 – 16 = 27 – 27 = 0
f) (–3) – (–2) – (+4) + (–7) + (+8) = –3 + 2 – 4 – 7 + 8 = 10 – 14 = –4
g) (+11) – (+7) + (–13) – (–20) + (–11) = 11 – 7 – 13 + 20 – 11 = 31 – 31 = 0
PÁGINA 91
13 Escribe una expresión que refleje los movimientos encadenados en cada recta
y halla el resultado:
a)
b)
a) +5 + 4 – 6 = +3
b) +3 – 9 + 4 = –2
Unidad 4. Los números enteros
PARTIDA
FIN
FIN
PARTIDA
Pág. 3