If a number has "−" sign before it, then it is written in words as negative; and if a number has "+" sign before it, then it is written in words as positive.
(1) −9 can be written in words as negative nine.
(2) +5 can be written in words as positive five.
(3) −28 can be written in words as negative twenty-eight.
(4) −100 can be written in words as negative hundred.
(5) +81 can be written in words as positive eighty-one.
(6) −4 can be written in words as negative four.
(7) −1 can be written in words as negative one.
(8) +1 can be written in words as positive one.
(9) +72 can be written in words as positive seventy-two.
(10) −48 can be written in words as negative forty-eight.
(11) +65 can be written in words as positive sixty-five.
(12) −95 can be written in words as negative ninety-five.