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completează casetele libere!​

Completează Casetele Libere class=

Răspuns :

Răspuns:

2486×3=(2000+400+80+6)×3

=2000×3+400×3+80×3+6×3

=6000+1200+240+18

= 7458

32 456×5=(30 000+2000+400+50+6)×5

=30 000×5+2000×5+400×5+50×5+6×5

=150 000+10 000+2000+250+30

= 162 280