CXC CSEC Mathematics Maths Practice Test

To convert millimeters to meters, it's important to know the relationship between the two units of measurement. There are 1,000 millimeters in one meter. Therefore, to convert millimeters to meters, you divide the number of millimeters by 1,000.

For this specific question, you would take the 3,800 millimeters and perform the following calculation:

3,800 millimeters ÷ 1,000 = 3.8 meters.

Hence, the correct expression of 3,800 millimeters in meters is 3.8. This conversion is a straightforward application of the metric system's scale between units, making it clear that you appropriately arrive at the correct answer through division.