Finding a Rate by Dividing Two Quantities
Video Solutions to help Grade 6 students learn how to find a rate by dividing two quantities.
Plans and Worksheets for Grade 6
Plans and Worksheets for all Grades
Lessons for Grade 6
Common Core For Grade 6
New York State Common Core Math Module 1, Grade 6, Lesson 18
Lesson 18 Student Outcomes
While there is no physical way to divide two different quantities like (5 miles)/(2 hours), students make use of the
structure of division and ratios to model (5 miles)/(2 hours) as a quantity 2.5 mph.
Interpreting a rate as a division of
two quantities, or better yet a fraction, is the first step towards converting measurement units using rates later in the
module, and dimensional analysis in high school.
They use this interpretation of a rate in word problems when
multiplying a rate by a quantity.
Lesson 18 Summary
We can convert measurement units using rates. The information can be used to further interpret the problem.
NYS Math Module 1 Grade 6 Lesson 18 Classwork
Mathematical Modeling Exercises:
1. At Fun Burger, the Burger Master can make hamburgers at a rate of 4 burgers/minute. In order to address the
heavy volume of customers, he needs to continue at this rate for minutes. If he continues to make hamburgers
at this pace, how many hamburgers will the Burger Master make in minutes?
2. Chandra is an editor at the New York Gazette. Her job is to read over each article before it is printed in the
newspaper. If Chandra can read words/second, how many words can she read in seconds?
NYS Math Module 1 Grade 6 Lesson 18 Problem Set
Sarah earns $15 per hour tutoring student-athletes at Brooklyn University.
If Sarah tutored for 12 hours this month, how much money did she earn this month?
If Sarah tutored for 19.5 hours last month, how much did she earn last month?