Estimate the sum `(64+79)` to the nearest ten.

Answer

To estimate the sum of \(64 + 79\) to the nearest ten, we can follow these steps:

**Step 1: Round 64 to the nearest ten.**
- The tens place in 64 is 6 (which represents 60).
- The units place is 4. Since 4 is less than 5, we round down.
- Therefore, the nearest ten to 64 is **60**.

**Step 2: Round 79 to the nearest ten.**
- The tens place in 79 is 7 (which represents 70).
- The units place is 9. Since 9 is greater than or equal to 5, we round up.
- Therefore, the nearest ten to 79 is **80**.

**Step 3: Add the rounded numbers.**
- Now we add the rounded numbers: \(60 + 80\).
- The sum is \(140\).

Thus, the estimated sum of \(64 + 79\) to the nearest ten is **140**.

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