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Unit 8 - Lesson 11 - Grade 5: Illustrative Mathematics
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Instructions
Lesson: What’s the Difference?
1
Cool Down: Reflect on Subtracting Fractions
1
Grade 5 Unit 8
Lesson 11: What’s the Difference?
CC BY 2021 Illustrative Mathematics®
Grade 5 Unit 8
Lesson 11: What’s the Difference?
CC BY 2021 Illustrative Mathematics®
Number Talk: Subtracting Fractions (Warm Up)
Find the value of each difference mentally.
1
1
1
1
Greatest Difference
1
1
1
1
What is the Smallest Difference?
Question 9
9.
Use the numbers below to fill in the squares. Find each difference. Add the 2 differences together.
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Question 10
10.
What is important to remember when subtracting fractions with unlike denominators?
Question 1
1.
Question 2
2.
Question 3
3.
Question 4
4.
Use the directions to play Greatest Difference with a partner.
Spin the spinner.
Each player writes the number that was spun in an empty box for Round 1. Be sure your partner cannot see your numbers.
Once a number is written down, it cannot be changed.
Continue spinning and writing numbers in the empty boxes until all 4 boxes have been filled.
Find the difference.
The person with the greatest difference wins the round.
After all 4 rounds, the player who won the most rounds, wins the game.
If there is a tie, players add the differences from all 4 rounds and the highest total wins the game.
Round 1
Question 5
5.
Complete Steps 1-5.
The person with the greater difference wins the round.
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Round 2
Question 6
6.
Complete Steps 1-5.
The person with the greater difference wins the round.
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Round 3
Question 7
7.
Complete Steps 1-5.
The person with the greater difference wins the round.
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Round 4
Question 8
8.
Complete Steps 1-5.
The person with the greater difference wins the round.
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After all 4 rounds, the player who won the most rounds wins the game.
If there is a tie, players add the sums from all 4 rounds and the highest total wins the game.