It's already there.
Round 69 to the nearest ten is 70.
Look at the digit in the ones place. It is a 7. That will round up the number, so will increment the 6, giving 870 as the result.
The answer is 70
Zero
600
600
It is: 0.6
It is 80.9
360
80.948 rounded to the nearest ten is 80. When rounding, we look at the digit in the ones place, which is 8. Since 8 is 5 or greater, we round up, but since we are rounding to the nearest ten, we stay at 80.
2.9
It is: 8