Domino — 0/0 — free printable diagram

How many spots are on the blank–blank domino?

This domino has no spots on one half and no spots on the other, so it is worth 0 in total.

One half

blank

Other half

blank

Total spots

0

Addition

0 + 0 = 0

Double?

Yes

• Each half of a domino carries its own number of spots, and the tile's value is the two halves added together: 0 + 0 = 0.
• Both halves match, so this tile is a double — the double blank. A double-six set has seven doubles, one for each number from blank to six.
• A blank half is worth zero, so it adds nothing to the total — which is what makes dominoes a neat way to show that adding zero leaves a number unchanged.
• A full double-six set has 28 tiles: every pair of numbers from blank to six once each, counting a tile and its turned-round twin as the same tile.