Here are some apps that I’ve found for primary kids in the mathematics classroom
Math Word Problems: Addition and Subtraction for Kindergarten and First Grade-These problems go up to 20
Equal Cards- Works on Missing Addends which is huge in 2nd Grade Common Core State Standards
Graph Cubes-Great for making your own kid-friendly bar graphs and surveys
Interactive Telling Time-Learning to Tell Time is fun- Great app with a variety of levels and different games
Count Money- Great basic game to make different amounts of money.