Riddle #1

Q: Why was the number 6 afraid of 7?  A: Because 7-8-9.

What's So Funny?

The numbers 7-8-9 sound like "7 ate 9" and a good reason for 6 to be afraid of his neighbor.

Riddle #2

Q: What did the number 0 say to 8?  A: Nice belt!.

What's So Funny?

The number 8 looks like a 0 with a tight belt around the middle.