An enticing math game designed for second grade kids to teach them the concept of inverse operations using a calculator. For this, they need to simplify the given expression using the rule of inverse operation to find the missing value. To find the missing value, they simply need to calculate the expression asked using an inverse operation and enter the response on the calculator. This game is not only a perfect way to make their understanding of the concept clearer, but also an apt way to learn how to use a calculator.