urgent dau coroniță toate exercițiile
Răspunsuri la întrebare
Răspuns:
Succes!
Explicație pas cu pas:
1) (942÷3+442÷2)÷(10-5)=
(314+221)÷5=
535÷5=107
2) (9×8-7-6)+[5×4÷(3-2)+1] < 123-(4+5×6):(7+8÷8+9)
(9×8-7-6)+[5×4÷(3-2)+1]=
(72-7-6)+(5×4÷1+1)=
59+21=80
123-(4+5×6):(7+8÷8+9)=
123-(4+30)÷(7+1+9)=
123-34÷17=
123-2=121
Adevarat!!
3)a) (90-45)÷5+2×2=13 b) 90-45÷5+2×2=68
45÷5+4=13
9+4=13
13=13
4) d:(236+459)=21 rest 324
d:695=21 rest 324
d= 695×21+324
d= 14 595+324
d= 14 919
5) [1926÷6+218-(800-873÷3)+364×25]÷5=50×20+8×100+2×10+6
[1926÷6+218-(800-291)+9100]÷5=1000+800+20+6
(321+218-509+9100):5=1826
(539-509+9100):5=1826
(30+9100):5=1826
9130:5=1826
1826=1826 ( A )
6) a) [90-(6×5)]:3= b)[(90-6)×5]:3=
(90-30):3= (84×5):3=
60:3=20 420:3=140
Nu servesc la elaborarea aceleiasi probleme pt ca dau rezultate diferite.