简算:2.46*9.9+0.246急简算:2.46*9.9+0.246急
简算:2.46*9.9+0.246急2.46*9.9+0.246=0.246*10*9.9+0.246=0.246*99+0.246=0.246*(99+1)=0.246*100=24.6