Question

Va rog frumos, va dau toate punctele,! Decat ex, 2 si 3

Answer 1

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 •)