Estimate each of the following products by rounding off each number upwards and the second number downwards :
`255xx350`

Answer

To estimate the product of 255 and 350 by rounding off the first number upwards and the second number downwards, we can follow these steps:

### Step-by-Step Solution:

1. **Round 255 Upwards:**
- We look at the nearest hundred for 255.
- The hundreds place is 2 (200), and we need to round up.
- Since we round up, we add 1 to the hundreds place (2 + 1 = 3).
- This gives us 300.
- **Rounded value of 255 upwards = 300.**

2. **Round 350 Downwards:**
- Now, we look at the nearest hundred for 350.
- The hundreds place is 3 (300), and we need to round down.
- Since we round down, we keep the hundreds place the same and change the other digits to 0.
- This gives us 300.
- **Rounded value of 350 downwards = 300.**

3. **Multiply the Rounded Values:**
- Now we multiply the rounded values: 300 x 300.
- To calculate this, we can use the formula for squaring a number:
\[ 300 \times 300 = 300^2 = 90000. \]
- **Estimated product = 90000.**

### Final Answer:
The estimated product of 255 and 350, after rounding, is **90,000**.

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