In the number 2,945, the underlined digit is 4, which is in the tens place. To round to the nearest ten, you look at the digit to the right of the underlined digit (the ones place), which is 5.

Since the digit in the ones place is 5 or greater, you round the number up.

Thus, rounding 2,945 to the nearest ten gives:

2,950

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Do you want more details or have any questions?

Here are 5 related questions to expand your understanding:

1. How do you round to the nearest hundred for 2,945?
2. What would be the result of rounding 3,762 to the nearest ten?
3. How do you round a decimal number like 12.345 to the nearest tenth?
4. Can you explain how to round to the nearest thousand for a number like 5,786?
5. What is the difference between rounding up and rounding down?

Tip: When rounding numbers, always check the next smallest place value to decide whether to round up or down!