29.5*1.6+1.95*16怎样简便计算?_数学解答

29.5*1.6+1.95*16怎样简便计算?

人气：330 ℃　时间：2020-04-05 14:49:06

解答

29.5*1.6+1.95*16
=2.95*16+1.95*16
=(2.95+1.95)*16
=[(3-0.05)+(2-0.05)]*16
=(5-0.1)*16
=5*16-0.1*16
=80-1.6
=78.4