Geometric Measurement - Add 3 Numbers 1-127

Use geometric shapes to provide context for finding the sum of 3 addends. Given 3 shapes, write an equation for the total number of sides. Use a Make 10 strategy to add in smart ways. How many sides all together in a hexagon, pentagon, and rectangle? What's 6+5+4? Since 6+4 = 10 and 10+5 = 15, there are 15 sides in all.

 
 

2. Practice

Lesson
1-127
Lesson
1-127
Lesson
1-127