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Unit 5 - Lesson 13 - Grade 5: Illustrative Mathematics

Last updated 9 months ago

9 questions

Note from the author:

Grade 5 Unit 5
Lesson 13: Analyze Addition Mistakes
CC BY 2021 Illustrative Mathematics

Instructions

Grade 5 Unit 5
Lesson 13: Analyze Addition Mistakes
CC BY 2021 Illustrative Mathematics

Lesson: Analyze Addition Mistakes

Estimation Exploration: Many Places (Warm Up)

1

1,987.89 + 658.54

Record an estimate that is:

Compare Calculations

1

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

1

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

1

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

1

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

1

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

1

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

Cool Down: What is the Error?

1

The calculation has an error.

Explain the error.

1

Find the correct value of 38.7 + 9.46.