1st grade addition of three digits hidden pictures game, Three digit numbers are also referred to as three place numbers. Addition of three digit numbers gets a bit more challenging than the basic one place addition in which students could rely on counting aids like chips. In this current activity, students might have to add and carry across places. Sometimes students might have to regroup across the units, tens and hundreds place. In this game students will solve several problems involving adding three place numbers. At the end of each problem, they will be prompted to go below and select the correct answer amongst a set of choices. There is also fun with this activity. There is an interactive fun game called hidden pictures game whereby players will see a picture progressively open as they answer questions correctly. This game is for kids in 1st, 2nd, 3rd and 4th grades.