18*222.2-666.6怎样简便计算_数学解答

18*222.2-666.6怎样简便计算

人气：111 ℃　时间：2020-04-13 15:40:24

解答

18*222.2-666.6
=18x222.2-3x222.2
=(18-3)x222.2
=15x222.2
=3x5x222.2
=3x1111
=3333