Round 2.985474124 to the nearest tenth of a gram
To round the number 2.985474124 to the nearest tenth of a gram, you'll need to look at the digit in the hundredth position, which is 5. If the digit in the hundredth position is 5 or above, you round up. If it's 4 or below, you round down.
In this case, since the digit in the hundredth position is 5, we need to round up. To do this, add 1 to the digit in the tenths position. The number in the tenths position is 8, so when we add 1 to it, we get 9.
Therefore, rounding 2.985474124 to the nearest tenth of a gram gives us 2.9 grams.