Back in the day learning was very hands on between home and the school with no computers or cell phone to distract children's attention.

Educator's teamed with the business world to develop ways to educate and entertain. Flash Cards were a natural go to for parents, 1975 saw a series of Milton Bradley flash cards these particular ones were for subtraction. With homeschooling being a more appealing or mandatory option during the pandemic these could be of great use!

It appears all the cards are there but the box is a bit rough.