what is 0.4 as a fraction in fifths?

0.4 = 4/10 = 2/5

2/5

0.4 = 4/10, simplifying, 2/5.

0.4 x 100%
= 0.4 x 100/100
= 40/100
= 4/10
= 2/5

2/5 or 'two-fifths.' Here's a quick tip:
1/5=20%=.2
2/5=40%=.4
3/5=60%=.6
4/5=80%=.8

0.4 = 4/10 = 4 ÷ 2 / 10 ÷ 2
= 2 / 5

0.4=4/10


= 2 / 5

=0.4*(5/5)
=2/5

2/5

or .4 * 10/10
4/10

reduced to 2/5