Different countries use two main systems for measuring things: the metric system and the imperial system. The choice of which system to use often comes from history and culture.

Metric System:

• Most countries use the metric system, like Sweden.
• It’s based on the number 10, so it’s simpler to do math with.
• Here are some examples:
  • Length: 1 kilometer (km) equals 1,000 meters (m).
  • Weight: 1 kilogram (kg) equals 1,000 grams (g).

Imperial System:

• The United States mainly uses the imperial system.
• This system has different units, which makes math a bit more complicated.
• Some examples are:
  • Length: 1 mile equals 5,280 feet.
  • Weight: 1 pound equals 16 ounces.

When we understand these systems, it helps us make sense of measurements around the world!