Three plus five plus one equals
When were adding three numbers
together, we can add them in any order. Lets start by adding together five
and one. One more than five is six. Weve added our five and our
one. Now, all we need to add is the
three. Six and three is nine. If we start at five and add one
more, we have a total of six. Then, all we have to do is add the
three to six. Three more than six is nine.
We could also start at three, add
five to take us to eight. Eight add one is nine. It doesnt matter which way we add
the numbers; the total is nine.