1 = one

11 = eleven

21 = twenty one

40 = forty

2 = two

12 = twelve

22 = twenty two

50 = fifty

3 = three

13 = thirteen

23 = twenty three

60 = sixty

4 = four

14 = fourteen

24 = twenty four

70 = seventy

5 = five

15 = fifteen

25 = twenty five

80 = eighty

6 = six

16 = sixteen

26 = twenty six

90 = ninety

7 = seven

17 = seventeen

27 = twenty seven

100 = a hundred

8 = eight

18 = eighteen

28 = twenty eight

1.000 = a thousand

9 = nine

19 = nineteen

29 = twenty nine

10.000 = ten thousand

10 = ten

20 = twenty two

30 = thirty

etc

1^{st = first}

10^{th = tenth}

37^{th = thirty seventh}

2^{nd = second}

11^{th = eleventh}

40^{th = fortieth}

3^{rd = third}

12^{th = twelfth}

50^{th = fiftieth}

4^{th = fourth}

15^{th = fifteenth}

60^{th = sixtieth}

5^{th = fifth}

20^{th = twentieth}

70^{th = seventieth}

6^{th = sixth}

21^{st = twenty first}

80^{th = eigtieth}

7^{th = seventh}

22^{nd = twenty second}

90^{th = ninetieth}

8^{th = eighth}

23^{rd = twenty third}

100^{th = a hundredth}

9^{th = ninth}

30^{th = thirtieth}

1000^{th = a tousandth}