Question: User: 255+16 and round to the nearest hundred.
1. **State the problem:** We need to add $255$ and $16$, then round the result to the nearest hundred.
2. **Perform the addition:**
$$255 + 16 = 271$$
3. **Rounding to the nearest hundred:**
- The hundreds digit in $271$ is $2$ (representing $200$).
- The tens digit is $7$, which is $\geq 5$, so we round up.
4. **Apply rounding rule:**
$$271 \approx 300$$
**Final answer:** $300$