One millimetre.
1 inch = 25.4 millimeters, so 1 millimeter is approximately 1/25 of an inch.
One millimetre !
That is one fifth of an inch, or approximately 5 mm.
It's pretty close. One fifth would be twenty percent.
One-fifth of an inch = 5.08 millimeters
0.5 cm, or half a centimetre is a distance that is approximately equal to one-fifth of an inch.
That depends on what you mean: twenty add one fifth is 20 + 1/5 = 20 1/5 twenty, add one fifth (of twenty) is 20 + 1/5 * 20 = 20 + 4 = 24
four
twenty and two and a half
5
one fifth = 20%
100