| 0 | zero, nought | ||
| 1 | one | 21 | twenty-one |
| 2 | two | 22 | twenty-two |
| 3 | three | 23 | twenty-three |
| 4 | four | 30 | thirty |
| 5 | five | 40 | forty |
| 6 | six | 50 | fifty |
| 7 | seven | 60 | sixty |
| 8 | eight | 70 | seventy |
| 9 | nine | 80 | eighty |
| 10 | ten | 90 | ninety |
| 11 | eleven | 100 | a hundred |
| 12 | twelve | 101 | one hundred and one |
| 13 | thirteen | 102 | one hundred and two |
| 14 | fourteen | 200 | two hundred |
| 15 | fifteen | 600 | six hundred |
| 16 | sixteen | 900 | nine hundred |
| 17 | seventeen | 1 000 | a thousand |
| 18 | eighteen | 6 000 | six thousand |
| 19 | nineteen | 1 000 000 | a million |
| 20 | twenty | 2651 | two thousand six hundred and fifty-one |
| první | 1st | the first | jedenáctý | 11th | the eleventh |
| druhý | 2nd | the second | dvanáctý | 12th | the twelfth |
| třetí | 3rd | the third | třináctý | 13th | the thirteenth |
| čtvrtý | 4th | the fourth | čtrnáctý | 14th | the fourteenth |
| pátý | 5th | the fifth | patnáctý | 15th | the fifteenth |
| šestý | 6th | the sixth | šestnáctý | 16th | the sixteenth |
| sedmý | 7th | the seventh | sedmnáctý | 17th | the seventeenth |
| osmý | 8th | the eighth | osmnáctý | 18th | the eighteenth |
| devátý | 9th | the ninth | devatenáctý | 19th | the nineteenth |
| desátý | 10th | the tenth | dvacátý | 20th | the twentieth |