Domino — 4/5 — free printable diagram

How many spots are on the 4–5 domino?

This domino has 4 spots on one half and 5 spots on the other, so it is worth 9 in total.

One half

4

Other half

5

Total spots

9

Addition

4 + 5 = 9

Double?

No

• Each half of a domino carries its own number of spots, and the tile's value is the two halves added together: 4 + 5 = 9.
• Turning the tile round swaps the halves without changing its value, which is the commutative property of addition: 4 + 5 = 5 + 4 = 9.
• The same tile shows the subtraction facts too: 9 − 4 = 5 and 9 − 5 = 4.
• 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.