Balancing addition equations practice - This is an online quiz for kids to review skills in adding while balancing equations. Balancing equations suggests that one number is missing and the task is often to find the missing number. Students are required to solve a problem and find the missing number. It is an interactive online quiz, meaning that students can get instant feedback as they test their skills. This activity is suitable for kids who need to review and are in 2nd, 3rd and 4th grades. There is a balancing addition equations worksheet under the printables section.