45/90 = 50%
A fraction like 45/90 shows up whenever something is halfway complete, such as finishing half of a project or attending 45 out of 90 classes. In these situations, the amount represents 50%, or one half of the total.
You can picture it quickly by imagining a circle split into two equal pieces, with one piece shaded. A full container that is filled to the halfway mark also gives you a fast estimate of 45/90.
A common mistake is thinking that 45/90 is a large amount because both numbers are fairly high. The actual size depends on the relationship between the numerator and denominator, and here the numerator is exactly half of the denominator.
