37x99+111x67用简便方法计算怎样做

37×99+111×67
=37×(100-1)+(100+10+1)×67
=3700-37+6700+670+67
=3700+6700+670+(67-37)
=3700+6700+(670+30)
=3000+700+6000+700+700
=(3000+6000)+700×3
=9000+2100
=11100

---