# Fluency with Percents

Video solutions to help Grade 7 students find 100% of a quantity (the whole) when given a quantity that is a percent of the whole by using a
variety of methods including finding 1%, equations, mental math using factors of 100, and double number line
models.

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Lessons for Grade 7
Common Core For Grade 7
## New York State Common Core Math Grade 7, Module 4, Lesson 6

### Lesson 6 Student Outcomes

• Students solve various types of percent problems by identifying the type of percent problem and applying appropriate strategies.

• Students extend mental math practices to mentally calculate the part, the percent, or the whole in percent
word problems.

Lesson 6 Classwork
Opening Exercise

Solve the following problem using mental math only. Be prepared to discuss your method with your classmates.

Cory and Everett have collected model cars since the third grade. Cory has 80 model cars in his collection, which is 25%
more than what Everett has. How many model cars does Everett have?