Instructional Activity# Example 2: Mental Math Using Factors of 100

Lesson 5. Unit 4. Grade 7 EngageNY

EngageNY10 min(s)

This Instructional Activity is a part of the Lesson 5, Unit 4, Grade 7. Students use mental math and factors of 100 to determine the whole quantity when given a quantity that is a percent of that whole. Answer each part using only mental math, and describe your method.