Unit 3 - Lesson 8 - Grade 3: Illustrative Mathematics
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Last updated 9 months ago
9 questions
Note from the author:
Grade 3 Unit 3
Lesson 8: Subtraction Algorithms (Part 1)
CC BY 2021 Illustrative Mathematics®
Grade 3 Unit 3
Lesson 8: Subtraction Algorithms (Part 1)
CC BY 2021 Illustrative Mathematics®
Lesson: Subtraction Algorithms (Part 1)
Find the value of each expression mentally.
1
100 - 98
100 - 98
1
101 - 99
101 - 99
1
200 - 98
200 - 98
1
204 - 98
204 - 98
Jada and Kiran found the value of 391 - 215. Their work is shown.
1
Explain how Kiran’s algorithm starts.
Explain how Kiran’s algorithm starts.
1
Explain how Kiran recorded the decomposition of the ten into more ones.
Explain how Kiran recorded the decomposition of the ten into more ones.
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Finish Kiran’s work.
Finish Kiran’s work.
1
Match each diagram with an algorithm.
Match each diagram with an algorithm.
| Draggable item | arrow_right_alt | Corresponding Item |
|---|---|---|
| arrow_right_alt | ||
| arrow_right_alt | ||
| arrow_right_alt | ||
| arrow_right_alt |
Cool Down: Connect a Diagram and an Algorithm
1
Explain how the diagram matches the algorithm.
Explain how the diagram matches the algorithm.