61Ⅹ0.36 +3.6X3.9的简便计算方r

2025-03-20 22:08:26
推荐回答(2个)
回答(1):

=61*0.36+0.36*10*3.9=61*0.36+0.36*39=0.36*(61+39)=0.36*100=36

回答(2):

61Ⅹ0.36 +3.6X3.9
=6.1Ⅹ3.6 +3.6X3.9
=(6.1+3.9)x3.6
=10x3.6
=36