Answer :
Ordinal numbers are used to describe the position of something in a list or order. They indicate "what order" something is in. For the numbers the student provided, their ordinal forms are as follows:
12th: Twelfth
46th: Forty-sixth
19th: Nineteenth
97th: Ninety-seventh
74th: Seventy-fourth
13th: Thirteenth
18th: Eighteenth
53rd: Fifty-third
41st: Forty-first
28th: Twenty-eighth
82nd: Eighty-second
39th: Thirty-ninth
16th: Sixteenth
14th: Fourteenth
25th: Twenty-fifth
11th: Eleventh
66th: Sixty-sixth
17th: Seventeenth
When writing ordinal numbers, it is common to use a combination of numbers and letter suffixes: -st, -nd, -rd, and -th. For example, 1 becomes 1st, 2 becomes 2nd, 3 becomes 3rd, and the suffix -th is used for all other numbers.