| Tens | Ones | Tenths | Hundredths | Thousandths | Ten Thousandths | ||
|---|---|---|---|---|---|---|---|
| 99.9999 | 9 | 9 | . | 9 | 9 | 9 | 9 |
Expanded Form of 99.9999:
99.9999 = (9 * 101) + (9 * 100) + (9 * 1/101) + (9 * 1/102) + (9 * 1/103) + (9 * 1/104)
99.9999 = (9 * 10) + (9 * 1) + (9 * 1/10) + (9 * 1/100) + (9 * 1/1,000) + (9 * 1/10,000)
99.9999 = 90 + 9 + 9/10 + 9/100 + 9/1,000 + 9/10,000
99.9999 = 90 + 9 + 0.9 + 0.09 + 0.009 + 0.0009
