Estimate each sum to the nearest ten :
`(57+34)`

Answer

To estimate the sum of \(57 + 34\) to the nearest ten, follow these steps:

### Step-by-Step Solution:

1. **Identify the numbers**: We have the numbers 57 and 34.

2. **Round 57 to the nearest ten**:
- Look at the ones place of 57, which is 7.
- Since 7 is greater than 5, we round up.
- Add 1 to the tens place (5) and change the ones place to 0.
- Therefore, \(57\) rounds to \(60\).

3. **Round 34 to the nearest ten**:
- Look at the ones place of 34, which is 4.
- Since 4 is less than 5, we round down.
- The tens place (3) remains the same, and the ones place becomes 0.
- Therefore, \(34\) rounds to \(30\).

4. **Add the rounded numbers**:
- Now we add the rounded values: \(60 + 30\).
- Calculate: \(60 + 30 = 90\).

5. **Final Answer**: The estimated sum of \(57 + 34\) to the nearest ten is \(90\).