Unit 1 - Lesson 18 - Grade 3: Illustrative Mathematics
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18 questions
Note from the author:
Grade 3 Unit 1
Lesson 18: Represent Arrays with Expressions
CC BY 2021 Illustrative Mathematics®
Grade 3 Unit 1
Lesson 18: Represent Arrays with Expressions
CC BY 2021 Illustrative Mathematics®
Lesson: Represent Arrays with Expressions
How many do you see?
How many do you see?
How do you see them?
How do you see them?
Directions:
- Use objects or drawings to represent each situation with an array.
- Write a multiplication expression to represent the situation.
There are 3 rows of chairs. Each row has 5 chairs.
There are 3 rows of chairs. Each row has 5 chairs.
Write a multiplication expression to represent the situation.
Write a multiplication expression to represent the situation.
There are 4 rows of cars. Each row has 5 cars in it.
There are 4 rows of cars. Each row has 5 cars in it.
Write a multiplication expression to represent the situation.
Write a multiplication expression to represent the situation.
There are 2 rows of eggs. Each row has 6 eggs.
There are 2 rows of eggs. Each row has 6 eggs.
Write a multiplication expression to represent the situation.
Write a multiplication expression to represent the situation.
There are 2 teams of students lined up. Each team has 10 students.
There are 2 teams of students lined up. Each team has 10 students.
Write a multiplication expression to represent the situation.
Write a multiplication expression to represent the situation.
Draw an array for each multiplication expression. Be prepared to share your reasoning.
Draw an array for 2 x 3.
Draw an array for 2 x 3.
Explain your reasoning.
Explain your reasoning.
Draw an array for 5 x 2.
Draw an array for 5 x 2.
Explain your reasoning.
Explain your reasoning.
Draw an array for 4 x 4.
Draw an array for 4 x 4.
Explain your reasoning.
Explain your reasoning.
Cool Down:
There are 2 rows of plants. Each row has 5 plants.
Draw an array to represent the situation.
There are 2 rows of plants. Each row has 5 plants.
Draw an array to represent the situation.
Write an expression to represent the situation.
Write an expression to represent the situation.