In this lively, vibrant, and inspiring follow-up to the Christopher Award-winning book 10 Hidden Heroes, NY Times and Washington Post bestselling author Mark K. Shriver and his wife Jeanne help children learn about the power of numbers and how working together can make the world a better place. We are shown what makes math fun and meaningful by showing how our service to others multiplies when people pitch in together. The whimsical, rhyming text and colorful artwork from award-winning artist Laura Watson inspire discussion on such topics as friendship, leadership, and camaraderie while illustrating the basic concepts of multiplication. We learn how living a life in service of others provides children with a sense of purpose, increases their confidence, and builds strong, resilient communities. Shriver, former Maryland state legislator, is president of Don Bosco Cristo Rey High School and former president of Save the Children Action Network in Washington, D.C.