Chapter 1. Conversion of units
In this chapter you will practice how to convert some of the most commonly used physical quantities such as: distance, surface area, volume, and weight. For example, going from meters (m) to kilometres (km), grams (g) to milligrams (mg) or square meters (m2) to square kilometre (km2). You will encounter these physical quantities and units more frequently in daily life; therefore, it is important to put a lot of effort in practicing how to convert them.