NÚMEROS ENTEROS DAVID GRADO 7°

A)      (-8)+ (–3) + (+3) + (–5) +  (–2) = 

B)      (–2)+(–7)+(+3)+(–4)+(–11)=

C)      (–7) –  (– 4) +(–5) + (–10) + (– 2) – (–13) = 

D)      (+8)–(–4)–(+4)–(+10)–(–5)–(–8) = 

E)      –2 + 8 –8 + 10 –20 + 5 – 7 = 

F)      9–7+11–20+12–23+5–5–12 = 

G)      – {   3 - 4 – 7 – [–5–7 + (6 – 7+ 5 ) ] } +8 =

H)      5+[(–5+10) + (–2–9)+(–8+2)] – 6 +7 =

I)      – [ – (–6+5 – 10+3 –15 ) ] =  

J)        { – [ – ( –20 +15 –7) – 8]– 6 }+7–(–3) = 

Efectuar:

A)                        (+12) x (–17) = 

B)                       (–90) x (–5) = 

C)                        (– 6)x(+5)x(–8)x(–3)= 

D)                        (– 456) x (+45) = 

E)                        (–450) ¸ (–9) = 

Efectuar:

A)                         (745)  ¸ (–5) = 

B)                        (6.913.536) ¸ (–56) =  

C)                        (-1.584.312) ¸ (-789) = 

D)                        (92.643.240) ¸ (–908)  =