This Set M (elem/upper elem) Word Problems is perfect to practice problem solving skills. Your elementary grade students will love this Set M (elem/upper elem) Word Problems. There are pictures of snakes in three overlapping circles. There are ten snakes in circle A, twenty snakes in circle B, and thirteen snakes in circle C. Six of the snakes are in both circles A and B. Five of the snakes are in both circles B and C. How many snakes are there in all? Six word problems.