Răspuns:
25×11=25×(10+1)=25×10+25×1=250+25=275
72×11=72×(10+1)=72×10+25×1=720+72=792
26×11=26×(10+1)=26×10+26×1=260+26=286
32×11=32×(10+1)=32×10+32×1=320+32=352
35×11=35×(10+1)=35×10+35×1=350+35=385
63×11=63×(10+1)=63×10+63×1=630+63=693
81×11=81×(10+1)=81×10+81×1=810+81=891
54×11=54×(10+1)=54×10+54×1=540+54=594
Explicație pas cu pas:
Salut :)
Sper că te-am ajutat, succes :)
Coronița, please? :)
