Online registration is closed for this event. If available, tickets on the day of the event may incur an additional charge.

Dots and Tods … and Subtraction

Tuesday, October 13 at 11:30 am ET (New York)

Experience an astonishing way to make sense of long subtraction.


Registration is free.  MoMath is proud to be one of the founding partners of the Global Math Project (, which aims to delight and excite one million people with an interesting piece of mathematics during one special week each year.

This is a live-streamed event.  Occasional video recordings are made available for a fee at

Online registration for this event closes 15 minutes after the event has begun.  Please be aware if you register in this window, you will join an event that is already in progress and there are no refunds.

October 13th, 2020 from 11:30 am to 12:15 pm
United States