Using Venn Diagrams Worksheet 
Lesson 1 
Problem: A veterinarian surveys 120 of his patrons. He discovers that 56 have dogs,
52 have cats and 8
have both. How many patrons have none of these pets?
Solution 56 have the dogs , 52 have the cats and 8 have Both
Step 1:
Solution Number that have none of the pets
Step 2:
Solution 120 – ( 56 + 52 + 8)
Step 3:
Solution Answer is: 4
Step 4:
Complete
Try two practice problems:

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