2nd grade addition of 3 to 3 digit numbers Scientist quiz game - Learn addition of two three digit numbers. This is an interactive scientist quiz in which students will learn and review addition of large numbers. Addition is an important skill learned by kids in 2nd, 3rd, 4th and 5th grades. Three digit numbers are also called three place numbers. This game is an educational math quiz with MCQ�s. As students answer questions correctly, they will see a progress bar. At the end of a complete solving of all problems in the quiz, students will be displayed their score. Teachers are always n search of extra resources to supplement their addition lesson. This game will enable extra practice for students both at home and in the classroom. Have fun learning math with this online quiz.