16.7*2.1-10.8 简便方法

2025-05-17 07:47:38
推荐回答(2个)
回答(1):

16.7*2.1-10.8=16.7*(2+0.1)-10.8=16.7*2+16.7*0.1-10.8=33.4+1.67-10.8=24.27

回答(2):

16.7*2.1-10.8
=16.7*2+16.7*0.1-10.8
=33.4+1.67-10.8
=35.07-10.8
=24.27