Enteros - Cepasanfrancisco.edurioja.org
Enteros - Cepasanfrancisco.edurioja.org
Enteros - Cepasanfrancisco.edurioja.org
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4Soluciones a las actividades de cada epígrafe<br />
14 Calcula.<br />
a) 6 + [5 + (7 + 2)] b) 8 + [4 – (3 + 5)] c) 10 – [6 + (2 + 7)]<br />
d) 15 – [2 – (6 – 10)] e) 15 – [10 – (8 + 4)] f) 12 – [7 – (2 – 10)]<br />
g) (–6 ) + [5 + (2 – 12)] h) (–7) – [3 – (4 – 9)]<br />
a) 6 + [5 + (7 + 2)] = 20 b) 8 + [4 – (3 + 5)] = 4<br />
c) 10 – [6 + (2 + 7)] = –5 d) 15 – [2 – (6 – 10)] = 9<br />
e) 15 – [10 – (8 + 4)] = 17 f) 12 – [7 – (2 – 10)] = –3<br />
g) (–6 ) + [5 + (2 – 12)] = –11 h) (–7) – [3 – (4 – 9)] = –15<br />
15 Calcula.<br />
a) (2 – 10) + [5 – (8 + 2)] b) (12 – 3) – [1 – (2 – 6)]<br />
c) [9 – (+5)] + [7 + (–10)] d) [10 – (–2)] – [5 – (+12)]<br />
e) [8 – (6 + 4)] – (5 – 7) f) [1 + (6 – 9)] – (8 – 12)<br />
a) (2 – 10) + [5 – (8 + 2)] = –13 b) (12 – 3) – [1 – (2 – 6)] = 4<br />
c) [9 – (+5)] + [7 + (–10)] = 1 d) [10 – (–2)] – [5 – (+12)] = 19<br />
e) [8 – (6 + 4)] – (5 – 7) = 0 f) [1 + (6 – 9)] – (8 – 12) = 2<br />
PÁGINA 87<br />
1 Escribe en forma de producto las siguientes expresiones:<br />
a) +(–7) + (–7) + (–7) b) –(+3) – (+3) – (+3) – (+3)<br />
c) +(+2) + (+2) + (+2) d) –(–3) – (–3) – (–3) – (–3) – (–3)<br />
e) +(–20) + (–20) + (–20) + (–20)<br />
a) +(–7) + (–7) + (–7) = (+3) · (–7)<br />
b) –(+3) – (+3) – (+3) – (+3) = (–4) · (–3)<br />
c) +(+2) + (+2) + (+2) = (+3) · (+2)<br />
d) –(–3) – (–3) – (–3) – (–3) – (–3) = (–5) · (–3)<br />
e) +(–20) + (–20) + (–20) + (–20) = (+4) · (–20)<br />
2 Calcula estos productos:<br />
a) 3 · (–2) b) 4 · (+5) c) 8 · (–6)<br />
d) –5 · (+3) e) –2 · (–4) f) –6 · (+3)<br />
g) (–4) · (+7) h) (+2) · (+6) i) (–5) · (–7)<br />
j) (+3) · (–8) k) (–9) · (–3) l) (–6) · (+4)<br />
a) 3 · (–2) = –6 b) 4 · (+5) = +20 c) 8 · (–6) = –48<br />
d) –5 · (+3) = –15 e) –2 · (–4) = +8 f) –6 · (+3) = –18<br />
g) (–4) · (+7) = –28 h) (+2) · (+6) = +12 i) (–5) · (–7) = +35<br />
j) (+3) · (–8) = –24 k) (–9) · (–3) = +27 l) (–6) · (+4) = –24<br />
Unidad 4. Los números enteros<br />
Pág. 12