0 the hero

Zero(0) the hero lives at school. He gives us snacks. He is a puppet. He loves us. He teaches if you add a 0 at the end of a number you get a bigger number like 4 a with a 0 = 40. But somtimes it dosent change like 0+0 = 0 or here`s another one 4+0 = 4. He is nice.