Question

sonia a cumparat 5 baxuri a cate 6 sticle de apa minerala si 4 baxuri a cate 6 sticle de apa plata.Cate sticle de apa a cumparat sonia in total?rezolva in doua moduri.

Answer 1

Mod. 1

5x6+4x6=30+24=54  sticle de apa

Mod. 2

(5+4)x6=9x6=54 sticle de apa

Answer 2

Plan

Primul mod

1)  Cate sticle de apa minerala sunt in cele 5 baxuri ?

   5 × 6 = 30 sticle de apa minerala

2)   Cate sticle de apa plata sunt in cele 4 baxuri ?

    4 × 6 = 24 sticle de apa plata

3)  Cate sticle de apa a cumparat Sonia ?

  30 + 24 = 54 sticle

_________________________

Al doilea mod

1 ) Cate baxuri a cumparat Sonia ?

   5 + 4 = 9 baxuri

2)  Cate sticle de apa sunt in cele 9 baxuri ?

    9 × 6 = 54 sticle de apa

__________________________

Rezolvarea problemei printr-o expresie numerica, in doua moduri:

5 × 6 + 4 × 6 = 30 + 24 = 54 sticle de apa a cumparat Sonia → primul mod

( 5 + 4 ) × 6 = 9 × 6 = 54 sticle de apa → al doilea mod