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4. Completați cu numerele potrivite:
5 X _ x 2 = 26 + 14 55+45=_x2x5 33+9=2x3x_ 48-30=2x_x3 _x2x5=78-28 2x2x_=56-28


Răspuns :

Răspuns:

5x_2=26+14

5x2x_=40

5x2x4=40

55+45=10x2x5

100=20x5

33+9=2x3x7

42=6x7

48-30=2x_x3

18=2x3x3

18=6x3

_x2x5=78-28

_x2x5=50

5x2x5=50

10x5=50

2x2x_=56-28

2x2x_=28

2x2x7=28

4x7=28