Lesson 8 Add and Subtract Within 100
Let’s fluently add and subtract within 100.
Warm-up Number Talk: Add by Place
Find the value of each expression mentally.
Activity 1 Heads Up, Add and Subtract Within 100
Write an equation that shows the value you found for each round you play.
Round 1:
Round 2:
Round 3:
Activity 2 Centers: Choice Time
Choose a center.
Five in a Row
Target Numbers