Question

递等式计算(能简便用简便计算)49.6 5.4-5.4/0.6 37.5*1.2 12.5*6.4

Answer 1

递等式计算
5.4-5.4/0.6
=5.4-9
= -3.6

37.5*1.2
=37.5*(1+0.2)
=37.5*1+37.5*0.2
=37.5+ 7.5
=45

12.5*6.4
=12.5*(6+0.4)
=12.5*6+12.5*0.4
= 75+5
=80

追问

递等式计算：49.6+5.4-5.4/0.6 请列式
37.5*102+12.5*6.4请列式 谢谢

追答

49.6+5.4-5.4/0.6
=55-9
=46

37.5*102+12.5*6.4
=37.5*(100+2)+12.5*(6+0.4)
=37.5*100+37.5*2+12.5*6+12.5*0.4
=3750+75+75+5
=3905

Answer 2

递等式计算，直接按照要求计算就行了，能简便的就简便。