Weights and measures

Weights and measures are all about how we measure things like length, weight and volume. Think of them like the rulers and scales you use in school to measure things in centimeters or ounces.

These measurements are all standard, which means everyone agrees on them so we can all use them the same way. This way, if you buy something from the store and it says it weighs 1 pound, you can be sure it actually weighs 1 pound!

For example, we measure length in units like centimeters and inches, weight in units like grams and pounds, and volume in units like liters and gallons. We use different types of tools to measure each of these things. For instance, we use a ruler to measure the length of a pencil, a scale to weigh a bag of apples and a measuring cup to measure how much milk we need for a recipe.

Having standard weights and measures helps us make sure things are fair for everyone. Imagine if you had to buy apples by paying a price not based on weight, but by the number of apples you got. It wouldn't be fair, would it?

So, in a nutshell, weights and measures are a set of standard units we use to measure things so that we can all agree on them and make sure things are fair!