Grade 3 Unit 3
Lesson 18: Diagrams and Equations for Word Problems
CC BY 2021 Illustrative Mathematics®
Grade 3 Unit 3
Lesson 18: Diagrams and Equations for Word Problems
CC BY 2021 Illustrative Mathematics®
What do you notice?
What do you wonder?
Explain your reasoning for sorting the cards.
Create a poster of your group’s solution. Organize your work so that it can be followed by others.
Choose one poster and make a comment on the solution. Write how you know the answer makes sense.
Andre had 451 beads. 125 beads were blue. 223 beads were pink. The rest of the beads were yellow. How many beads were yellow?
Which equation matches this situation?
Explain your reasoning.