In this deck, we'll explore the common units we use to measure things like length, weight, and volume. You'll learn the standard metric units and, most importantly, how to convert between them. We'll also cover conversions for units of time.

Let's start with length. The main metric units are millimetres, centimetres, metres, and kilometres. Think of a millimetre as the thickness of a credit card, a centimetre as the width of your little finger, a metre as one big step, and a kilometre as about a ten-minute walk.

To convert between these units, there's a simple rule. When you go from a bigger unit to a smaller unit, you multiply. For example, to find how many centimetres are in 2 metres, you multiply 2 by 100. When you go from a smaller unit to a bigger one, you divide.