11,12,13,14 va rog mult

11.
A) 15,5+1,2=16,7 kg
B) 15,5-2,53=12,97 kg
C)15,5+3,17+1,5=
18,67+1,5=20,17 kg in total

12. Primul recipient |__|__|
Al doilea recipient |__|
Total 35,1 litri
Al doilea recipient =35,1:3=11,7 litri
Primul recipient =11.7x2=23,4 litri
Verificare : 11,7+23,4=35,1 litri

13. 2,5x(1,8-1,75)x10 la puterea 2=
2,5x0,05x100=
0,125x100=12,5

14. (4,3+1,15):5-(0,3)la puterea 2=
5,45:5-0,09=
1,09-0,09=1

Succes!

Răspuns:

Explicație pas cu pas:

11)

a)

15,5+1,2=16,7kg

b)

15,5-2,53=12,970 kg

c)

3,17-1,5=1,67 kg(se scot)

15,5-1,67=13,83 kg (  raman)

-

-

12)

1parte +2 parti= 3 parti egale

35,1:3=11,7 (al doilea )

11,7x2=23,4 (primul)  

-

13)

=2,5*0,05*10

=0,125*10

= 1,25

-

14)

=5,45:5-0,09

=1,09-0,09

=1