Log inSign up for FREE
Library

Unit 5 - Lesson 11 - Grade 5: Illustrative Mathematics

Last updated 9 months ago
5 questions
Note from the author:
Grade 5 Unit 5
Lesson 11: Make Sense of Decimal Addition
CC BY 2021 Illustrative Mathematics
Grade 5 Unit 5
Lesson 11: Make Sense of Decimal Addition
CC BY 2021 Illustrative Mathematics
Lesson: Make Sense of Decimal Addition

How Many Do You See: Grids (Warm Up)

1

How many do you see? How do you see them?




The Sum

1

Find the value of the expression. Show your thinking. Organize it so it can be followed by others.

1

What questions do you have about adding decimals?

Target Numbers: Add Tenths or Hundredths

Play one round of Target Numbers.

Partner A
  • Start at 0. Roll the number cube. Choose whether to add that number of tenths or hundredths to your starting number.
  • Write an equation to represent the sum.

  • Take turns until you’ve played 6 rounds.
  • Each round, the sum from the previous equations becomes the starting number in the new equation.
  • The partner to get a sum closest to 1 without going over wins.
1

Describe a move that you could have made differently to change the outcome of the game.

Cool Down: The Value of the Sum
1

What is the value of 1.20 + 0.13? Explain or show your reasoning.