0.2.
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
Since we want to round a value with 3 sig fig, we need to round that value to the nearest tens. To figure that out, you need to count the number of digit places from the leading nonzero digit to the ending digit based on the number of three significant numbers.96829 is the starting digit. Then, count 2 digits next to "land on" the tens digit, which is 8.The adjacent digit is 2. Since 2 is not 5 or greater, we round down the value to obtain 9680.
Look at the digit to the right of the tens digit. If it is 5 or more, add one to the digit and add zeros in the end. Otherwise it will be 4 or less and so leave the number alone.
Look at the digit all the way to the left and the one immediately to the right of it. If the one to the right is 5 or more, increase the one to the left by one and zero all the rest of the numbers. If the one to the right is 4 or less, leave the one to the left and zero all the rest. 200 and 600
It is 5000000.
To round off 128,674 to leave one nonzero digit, you would round it to 100,000.
It is 300000.
It is 6000000.
It is 300.
It is 500.
500
It is 3000000000.
It is 90000.
500500
It is 3000000000.
485 6 592 128 674