This is a song from Multiplication. It's sung by Parry Gripp.
Multiplication[]
When you see five happy apes, and each one has four yummy grapes
How can you tell how many grapes there are in all?
You can add up four plus four plus four plus four plus four like so
The sum is twenty grapes, but there's another way to go
You can use multiplication, it's a different way to add
What a handy calculation, when you learn it, you'll be glad
And so it's five times four, you still got twenty, my oh my
Instead of adding repeatedly, you multiply
There are six eggs in a carton, and suppose you're buying three
Well, three times six is eighteen eggs, just count them and you'll see
And four times three makes twelve big pigs inside a farmer's pen
You got five fingers on each hand, and two times five makes ten
Yes, it's multiplication, that little X means times
Three times five makes fifteen ice cream cones or basketballs or limes
You could add up five plus five plus five, but here's a thing to try
Instead of adding repeatedly, you multiply
It's an awesome thing to learn how you can multiply