用递等式计算,怎样算简便就怎样算:①8.4×0.2

2025-04-14 13:25:35
推荐回答(2个)
回答(1):

8.4×0.2=1.68

回答(2):

8.4*0.2
=(84÷10)*(2÷10)
=84*2÷10÷10
=168÷10÷10
=1.68