~ 5.13 ~
Expressions with Rational Numbers
Learning Targets
I can add, subtract, multiply, and divide rational numbers.
I can evaluate expressions that involve rational numbers.
Notes
We can represent sums, differences, products, and quotients of rational numbers, and combinations of these, with numerical and algebraic expressions.
We can write the product of two numbers in different ways.
By putting a little dot between the factors, like this: - 8.5 • x.
By putting the factors next to each other without any symbol between them at all, like this: - 8.5x.
Activities
13.1 True or False: Rational Numbers
Decide if each statement is true or false. Be prepared to explain your reasoning.
( - 38.76) ( - 15.6)
10,000 - 99,999 < 0
(3/4) ( -4/3) = 0
(30)(- 80) - 50 = 50 - ( 30) (-80)
13.2 Card Sort: The Same But Different
![](https://www.google.com/images/icons/product/drive-32.png)
Here is a set of cards. Group them into pairs of expressions that have the same value.
Summary
Assignment
Check Google Classroom!