Elena and Andre found the value of 621.45 + 72.3. Who do you agree with? Explain or show your reasoning.
Elena and Andre found the value of 621.45 + 72.3. Who do you agree with? Explain or show your reasoning.
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
1,987.89 + 658.54
Record an estimate that is:
Find the value of 621.45 + 72.3. Explain or show your reasoning.
Elena and Andre found the value of 621.45 + 72.3. Who do you agree with? Explain or show your reasoning.
Find the value of the expression. Explain or show your reasoning.
Find the value of the expression. Explain or show your reasoning.
Find the value of the expression. Explain or show your reasoning.
Find the value of the expression. Explain or show your reasoning.
The calculation has an error.
Explain the error.
Find the correct value of 38.7 + 9.46.