OPEN UP RESOURCES K–5 MATH
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GRADE 3, UNIT 3
Section D Checkpoint
Problem 1
There are 4 tables in the cafeteria with 9 students eating lunch at each table. There are also
177 students waiting in line for lunch at the cafeteria.
How many students are there in the cafeteria altogether?
a. Write an equation for the situation. Use a “?” for the unknown.
b. Find how many students there are in the cafeteria altogether.
Problem 2
Andre has 104 collecting cards. He gets 3 more sets of 8 cards.
a. Explain why the diagram represents the situation.
b. Write an equation that matches the diagram.
Grade 3, Unit 3: Section D Checkpoint
2022 Edition, CC BY 4.0. Download for free at openup.org
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OPEN UP RESOURCES K–5 MATH
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c. How many cards does Andre have now?
Grade 3, Unit 3: Section D Checkpoint
2022 Edition, CC BY 4.0. Download for free at openup.org
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