A triathlon is a sporting competition where contestants participate in three different sporting events; swimming, biking and running. Has your child participated in a triathlon before, or had reason to witness one take place? The two kids in this worksheet, Sara and Carlos are training hard for an upcoming triathlon. They need your child’s help to figure out how many miles they have already swam, ran and biked. Your little one needs to solve the addition problems to help them do that. Help your kids check the correct answers.