Big Ideas:
When a rational number is divided by a non-zero number, the result is always a rational number.
Rational numbers can be used to describe real-world contexts and can be multiplied.
You can use the same rules for division of rational numbers that you used for multiplying rational numbers to determine if the quotient will be positive or negative.
This lesson builds on students’ work dividing rational numbers, and extends these concepts to negative numbers. The task requires students to determine the monthly, bi-annual, and daily rent for an apartment. Students will learn that when a rational number is divided by a non-zero number, the result is a rational number. Students will understand that the rules for rational number multiplication apply to division as well. This lesson builds to solving real-world problems involving all four operations with rational numbers.
Vocabulary: rational number, product, quotient
Special Materials:
None
Lesson plan