Question

How do you write .4 as a percent?

Answer 1

40%

Explanation:

First and foremost; percent is a fraction but a special one where the bottom number (denominator) is fixed at 100.

Multiply by 1 and you do not change the value. However 1 comes in many forms.

`0.4xx1 color(white)("d")-> color(white)("d")0.4xx100/100 = 40/100`

This is the same as: `40color(white)("d")ubrace(xx1/100)`
`color(white)("ddddddddddddddddddd")darr`
`color(white)("ddddddddddddddd")40color(white)("dd.")%`

% is another way of writing `xx1/100` including the multiply