The greatest nonzero place is the number closest to the left (or the greatest number) that is not zero. So in this example, that would be the 8. So you would round the 8 up to a 9 (since 6 is greater than 4). So your answer would be 0.9
To the nearest ten, 70
0.05
0.6
200
0.5
To the nearest ten, 70
What this means is to round to the biggest digit that is not zero (the one furthest to the left that is not zero). So: 2.814 would round up to 3 because the greatest nonzero digit is the two and the digit to the right of that (the 8) is between 5 & 9. Some more examples of rounding to the greatest nonzero place: 0.00080472 ≈ 0.0008 0.330921 ≈ 0.3 (It rounds down as the number to the right of the 3 is between 0 & 4) 9.1 ≈ 9 5.942 ≈ 6
4841
0.6
200
It is seven tenths.
70
0.5
0.05
The correct answer is 3,205
3000
That rounds to 40.