42/84 = 50%
A value of 42/84, or 50%, can show up in everyday life when half of a group chooses one option, such as half the students picking pizza for lunch. It can also describe a phone battery that is halfway charged.
A quick way to picture 50% is to imagine splitting something into two equal parts, like cutting a sandwich in half. If the amount looks close to one of those halves, you can estimate that it is around 50%.
One common point of confusion is thinking that 50% always means exactly half of the original amount, even if the amount has changed. For example, half of a small pizza is much less food than half of a large pizza.
