curriculum/challenges/english/blocks/zh-a1-learn-numbers-20-to-99/69870348cbfaa270501be5f8.md
Now you know that the numbers from 11 to 19 are formed by the units digit (1–9) after 十 (shí) (10). The same logic applies to numbers from 21 to 29.
In Chinese, the number 20 is called 二十 (èr shí).
To form numbers from 21 to 29, you simply take 二十 (èr shí) (20) and add the units digit (1–9) directly after it.
| Number | Chinese |
|---|---|
| 20 | 二十 (èr shí) |
| 21 | 二十一 (èr shí yī) |
| 22 | 二十二 (èr shí èr) |
| 23 | 二十三 (èr shí sān) |
| 24 | 二十四 (èr shí sì) |
| 25 | 二十五 (èr shí wǔ) |
| 26 | 二十六 (èr shí liù) |
| 27 | 二十七 (èr shí qī) |
| 28 | 二十八 (èr shí bā) |
| 29 | 二十九 (èr shí jiǔ) |
Listen to the audio and practice pronouncing these numbers.
I've practiced pronouncing the numbers from 20 to 29.
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"text": "二十 (èr shí)",
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"dialogue": {
"text": "二十一 (èr shí yī)",
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"dialogue": {
"text": "二十二 (èr shí èr)",
"align": "center"
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"character": "Chen Na",
"startTime": 7.35,
"finishTime": 8.64,
"dialogue": {
"text": "二十三 (èr shí sān)",
"align": "center"
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"character": "Chen Na",
"startTime": 9.82,
"finishTime": 11.08,
"dialogue": {
"text": "二十四 (èr shí sì)",
"align": "center"
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"character": "Chen Na",
"startTime": 12.33,
"finishTime": 13.65,
"dialogue": {
"text": "二十五 (èr shí wǔ)",
"align": "center"
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"character": "Chen Na",
"startTime": 15.12,
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"dialogue": {
"text": "二十六 (èr shí liù)",
"align": "center"
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"startTime": 17.61,
"finishTime": 18.99,
"dialogue": {
"text": "二十七 (èr shí qī)",
"align": "center"
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"character": "Chen Na",
"startTime": 20.33,
"finishTime": 21.56,
"dialogue": {
"text": "二十八 (èr shí bā)",
"align": "center"
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"character": "Chen Na",
"startTime": 22.84,
"finishTime": 24.33,
"dialogue": {
"text": "二十九 (èr shí jiǔ)",
"align": "center"
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