简便计算101/5×6.12 101/5×〔1又100/1-6.12〕
简便计算101/5×6.12 101/5×〔1又100/1-6.12〕
日期：2022-03-20 05:26:33 人气：1
101/5×6.12+101/5×〔1又100/1-6.12〕
=101/5×（6.12+1又100/1-6.12）
=101/5×1又100/1
=101/5×100/101
=20/1
=101/5×（6.12+1又100/1-6.12）
=101/5×1又100/1
=101/5×100/101
=20/1