Library

Unit 5 - Lesson 14 - Grade 5: Illustrative Mathematics

By Formative Library
Last updated 3 months ago
10 Questions
Note from the author:
Grade 5 Unit 5
Lesson 14: Make Sense of Decimal Subtraction
CC BY 2021 Illustrative Mathematics
Grade 5 Unit 5
Lesson 14: Make Sense of Decimal Subtraction
CC BY 2021 Illustrative Mathematics
Lesson: Make Sense of Decimal Subtraction

True or False: Decimal Differences (Warm Up)

Decide if each statement is true or false. Be prepared to explain your reasoning.
1.

2.

Explain your reasoning.

3.

4.

Explain your reasoning.

5.

6.

Explain your reasoning.

The Difference

7.

Find the value of 2.26 - 1.32 . Explain or show your reasoning.

8.

What questions do you have about subtracting decimals?


Target Numbers: Subtract Tenths or Hundredths

Play one round of Target Numbers.

Partner A:
  • Start at 2. Roll the number cube. Choose whether to subtract that number of tenths or hundredths from your starting number.
  • Write an equation to represent the difference.

  • Take turns until you’ve played 6 rounds.
  • Each round, the difference from the previous equations becomes the starting number in the new equation.
  • The partner to get a difference closest to 1 without going under wins.
9.

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

Cool Down: Subtract
10.

Find the value of 3.57 - 1.4 . Explain or show your reasoning.