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Nisha and Suzanne made this picture to help them find the answer to 7 3.
Roberto made this picture and wrote this story:
Suzanne looked at both pictures. She saw that 7 3 = 21 and 3 7 = 21. She said, “I know how they came out the same. I found seven threes.” Then she drew seven boxes on Roberto's picture like this:
- How did Suzanne change Roberto's picture? What does Suzanne's work show?