Estimate each sum to the nearest ten :
`(538+276)`

Answer

To estimate the sum of 538 and 276 to the nearest ten, follow these steps:

### Step 1: Round 538 to the nearest ten
- Look at the last digit (units place) of 538, which is 8.
- Since 8 is greater than 5, we round up.
- Add 1 to the tens place (3) and change the units place to 0.
- Therefore, 538 rounds to 540.

### Step 2: Round 276 to the nearest ten
- Look at the last digit (units place) of 276, which is 6.
- Since 6 is greater than 5, we round up.
- Add 1 to the tens place (7) and change the units place to 0.
- Therefore, 276 rounds to 280.

### Step 3: Add the rounded numbers
- Now, we add the rounded numbers: 540 and 280.
- 0 + 0 = 0 (units place)
- 4 + 8 = 12 (write down 2 and carry over 1)
- 5 + 2 + 1 (carry) = 8
- So, 540 + 280 = 820.

### Final Answer
The estimated sum of 538 and 276 to the nearest ten is **820**.

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