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Unit 5 - Lesson 13 - Grade 5: Illustrative Mathematics

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Last updated 11 months ago
9 questions
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Grade 5 Unit 5
Lesson 13: Analyze Addition Mistakes
CC BY 2021 Illustrative Mathematics
Grade 5 Unit 5
Lesson 13: Analyze Addition Mistakes
CC BY 2021 Illustrative Mathematics
Lesson: Analyze Addition Mistakes
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Cool Down: What is the Error?
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Estimation Exploration: Many Places (Warm Up)

Question 1
1.

1,987.89 + 658.54

Record an estimate that is:

Compare Calculations

Question 2
2.

Find the value of 621.45 + 72.3. Explain or show your reasoning.

Question 3
3.

Elena and Andre found the value of 621.45 + 72.3. Who do you agree with? Explain or show your reasoning.

Same Digits, Different Sums

Question 4
4.

Find the value of the expression. Explain or show your reasoning.

Question 5
5.

Find the value of the expression. Explain or show your reasoning.

Question 6
6.

Find the value of the expression. Explain or show your reasoning.

Question 7
7.

Find the value of the expression. Explain or show your reasoning.

Question 8
8.

The calculation has an error.

Explain the error.

Question 9
9.

Find the correct value of 38.7 + 9.46.