ex 2. 6•118=6•(100+10+8)
=6•100+6•10+6•8
=600+60+48
=708
3•234=3•(200+30+4)
=3•200+3•30+3•4
=600+90+12
=702
5•109=5•(100+9)
=5•100+5•9
=500+45
=545
ex 3. 3•300=3•3•100
=9•100
=900
2•300=2•3•100
=6•100
=600
2•400=2•4•100
=8•100
=800
(nu am avut semnul inmultirii si am scris cu •)
