Here's a game that combines jigsaw puzzles with arithmetic problems to great success

An upcoming indie puzzler takes on the complexity of circuits by reducing them to familiar puzzle pieces and simple math. In Electrogical, set to release this year and with a demo out now, you'll place pieces on the board to form a chain that adds, subtracts, divides, and multiplies to reach a set output—but the pieces you have are fixed in shape and rotation, the boards are weird sizes, and you might not need every part you have to succeed.

It's pretty approachable for both a puzzle game and a math game...