Thousands with a silent tens place
21,604 splits into 21 | 604. In the final group, the tens place is zero, so “four” follows “six hundred” directly.
21604 in words: twenty-one thousand six hundred four
21,604
In words
Twenty-one thousand six hundred four
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How 21,604 is built
Pattern: Thousands with a silent tens place
21,604 splits into 21 | 604. In the final group, the tens place is zero, so “four” follows “six hundred” directly.
Digit and place-value table
| Digit | Position | Value | Value in words |
|---|---|---|---|
| 2 | ten-thousands | 20,000 | twenty thousand |
| 1 | thousands | 1,000 | one thousand |
| 6 | hundreds | 600 | six hundred |
| 0 | tens | 0 | not spoken |
| 4 | ones | 4 | four |
Reading the number in groups
| Group | Digits | Reading |
|---|---|---|
| thousands | 21 | twenty-one thousand |
| final group | 604 | six hundred four |
Why 21,604 is written this way
Group boundary: 21 | 604
The comma boundary separates 21 from 604: “twenty-one thousand” is read before “six hundred four”.
Silent zero positions
The tens position contains zero. It preserves place value in the numeral but adds no spoken word.
Hyphenation
The spelling contains one hyphen. Each hyphen joins a tens word to a non-zero ones word inside the same two-digit group.
American English and “and”
The American English style used here normally omits “and” between “hundred” and the following tens or ones.
Number structure
- 21,604 has 5 digits and 2 place-value groups.
- 4 positions contribute a spoken value; 1 zero position is silent.
- Its thousands group is 21; its final three-digit group is 604.