4⼀10=0.4英语怎么说？

1,最正式的说法：
Four divided by ten equals to zero point four

2,最讨巧的说法：
four tenths is zero point four

3，最美国化的说法：
Four divided by ten is o dot four.

it depends whether it is a fraction or division:

Fractions are spoken like this:
1/2 half 1/3 one third 1/4 one quarter 4/10 four tenths. four tenths equals two fifths (4/10 = 2/5)

four tenths = zero point four (point=".")
four tenths = point four

or you could say

four over ten = point four / zero point four
four divided by ten = point four / zero point four

divided = "/"

教你个口语化的：four divided by ten is point four.

zero在口语中一般是省略掉不说的．

four divided by ten is zero point four.

这个最常用。

four divided by ten is equal to zero point four .