Unit 3 - Lesson 4 - Grade 3: Illustrative Mathematics
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8 questions
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Grade 3 Unit 3
Lesson 4: Introduction to Addition Algorithms
CC BY 2021 Illustrative Mathematics®
Grade 3 Unit 3
Lesson 4: Introduction to Addition Algorithms
CC BY 2021 Illustrative Mathematics®
Lesson: Introduction to Addition Algorithms
1
Which one doesn’t belong?
Which one doesn’t belong?
Three students found the value of 362 + 354. Their work is shown. Explain how each method works.
1
Tyler’s drawing.
Tyler’s drawing.
1
Lin’s method.
Lin’s method.
1
Han’s method.
Han’s method.
Try using an algorithm to find the value of each sum. Show your thinking. Organize it so it can be followed by others.
1
475 + 231
475 + 231
1
136 + 389
136 + 389
1
670 + 257
670 + 257
Cool Down: Choose an Algorithm
1
A diagram of the base-ten blocks that represent 138 + 425 is shown.
Use an algorithm you learned in today's lesson to find the value of the sum.
A diagram of the base-ten blocks that represent 138 + 425 is shown.
Use an algorithm you learned in today's lesson to find the value of the sum.