Lesson 10 Here Comes the Sum
Let’s play some games to practice adding fractions.
Warm-up Number Talk: Adding Fractions
Find the value of each expression mentally.
Activity 1 Greatest Sum
Use the directions to play Greatest Sum 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 paper.
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 sum.
The person with the greater sum 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 sums from all 4 rounds and the highest total sum wins the game.
Activity 2 Smallest Sum
Use the directions to play Smallest Sum 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 paper.
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 sum.
The person with the lesser sum 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 sums from all 4 rounds and the lesser total sum wins the game.