a)4litre
b)3litre
Ah, a nearest litre is simply finding the closest whole litre amount to a given measurement. For example, if you have a liquid that measures 3.2 litres, the nearest litre would be 3 litres. It's just a way to round off to the closest whole litre for simplicity and ease.
1 liter = 1000ml. 1642/100 = 1.642L = 2L (to nearest liter)
To round to the nearest liter, look at the one's place digit. If the next digit is 5 or greater, round up by adding 1 to the one's place and make all digits to the right of it 0. If the next digit is less than 5, simply remove all digits to the right of the one's place. Finally, add "L" or "Litre" to the result.
You express your measurements in liters (convert, if necessary), then use the usual rules for rounding numbers.
To the nearest half litre - it would be 4.0
3 L
45
Write 2l 700ml to the nearest
It is 4.0 litres.
10 L
It is 17.4 litres.
5 L