\(331.997+662+331\) (* Dấu " . " là dấu nhân )
\(=331.997+331.2+331.1\)
\(=331.\left(997+2+1\right)\)
\(=331.1000\)
\(=331000\)
331*997 + 622 + 331
= 331*997 + 331*2 + 331*1
= 331*(997 + 2 + 1)
= 331*1000
= 331000
331 x 997 + 662 + 331
=33007 + 662 + 331
=330669 + 331
=331000
~hok tốt~
331 . 997 + 662 + 331
= 331 . (997 + 1+2 )
= 331 .1000
= 331000
hok tốt
331 . 997 + 662 + 331
= 331 . (997 + 1+2 )
= 331 .1000
= 331000
hok tốt
331x997+662+331
=330007+662+331
=330669+331
=331000
331x997+662+331 =
= 331 x 997 + 331 x 2 + 331
= 331 x ( 997 + 331 +1 )
= 331 x 1000
= 331 000