What is one plus one? Let's solve this step by step. We start with one object, represented by this blue dot. Then we add another object, another blue dot. When we combine them together, we get two objects total. Therefore, one plus one equals two.
There are many different ways to show that one plus one equals two. We can use numbers, like the equation one plus one equals two. We can use objects, like circles, where one circle plus another circle gives us two circles. We can even use fingers, where one finger plus one finger equals two fingers. No matter which method we use, the answer is always the same: two.