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.
Heather says, "I have two numbers in mind. When I subtract the smaller from the larger, the difference is seven. When I multiply the two numbers, the product is eighteen. What are my two numbers?" Six word problems.
This lesson is designed to help students begin counting while viewing objects in groups. Three sets of four; includes teaching suggestions and answer sheets.