Kids sharpen mental addition skills with this silly construction math game.

Children dig up dinosaur fossils by adding 10 to multiples of 100 in this prehistoric game.

Children use their mental math skills to determine which equations add up to 20 in this math game.

Children flex their mental math muscles as they try to quickly find the equations that add up to 10.

Compose numbers to make 20 and build first grade addition skills in each round of this online game.