21/1000 is in its simplest form.
In its simplest form 525/1000 = 21/40
21 over 200
Using standard algebraic notation, "42 over 1000" in its simplest form is 42/1000. Its reduced value would be 21 / 500 or .042 .
21/80 is already in its simplest form
21/5 is the simplest form.
21/46 is the simplest form.
21/52 is the simplest form.
4/21 is in its simplest form.
13/21 is in its simplest form.
21/22 is in simplest form.
21/16 is in its simplest form.
21/100 is in its simplest form.