Put `lt `or `gt` symbol in box:
`23451 square 67891`

Answer

To determine whether the number 23,451 is less than or greater than the number 67,891, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Numbers**:
- We have two numbers: 23,451 and 67,891.

2. **Compare the Number of Digits**:
- The number 23,451 has 5 digits.
- The number 67,891 also has 5 digits.
- Since both numbers have the same number of digits, we need to compare them further.

3. **Compare the Highest Place Value**:
- Look at the first digit (the ten-thousands place):
- In 23,451, the first digit is 2.
- In 67,891, the first digit is 6.
- Since 6 (from 67,891) is greater than 2 (from 23,451), we can conclude that 67,891 is greater than 23,451.

4. **Conclusion**:
- Therefore, we can put the symbol `>` (greater than) in the box.
- The final statement is: 23,451 < 67,891.

### Final Answer:
23,451 `lt` 67,891

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