From the publisher’s rulebook
Who goes first in Math Room?
SimplyFun English rules linked from product SKU SF093
The last player to ring a doorbell goes first.

Source & edition
- Math Room — SimplyFun rulesSimplyFun · Setup · Checked 2026-09-28
Image: © SimplyFun and the original game/package artists · SimplyFun, official product image · Editorial fair use (Small publisher-sourced image of the exact product box identifies the game discussed in this starting-rule article. It is used for editorial reference with no more package artwork than needed for identification.)
If there’s a tie
The rulebook doesn’t say.
Game night gear
More starting rules
Browse available game rulesGames with a similar starting rule
Fog of LoveThe player who last blew a kiss is the first player.
Mercado de LisboaWhoever last visited a market takes the first turn.
SmileThe last player to have seen a firefly starts.
Dungeons & Dragons: The Yawning PortalThe player who last ate something goes first.
Council of VeronaThe player who was last on a balcony goes first.
Found a different instruction in your edition? Send a correction with the game, edition, and source.