The digit after the decimal point is a 9, so we round up to give 7 as the answer.
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690
To round 689 to the nearest ten, you look at the digit in the tens place, which is 8. Since 8 is greater than or equal to 5, you round up. Therefore, 689 rounded to the nearest ten is 690.
To the nearest ten: 690 To the nearest tenth: 691.0
690
If you want to round 690 to hundreds the answer is 700 but with tens then 690 still