Inequality Symbols and Definitions
Grade 7 students in Big Ideas Math Advanced 2 (Chapter 11: Inequalities) learn the four inequality symbols and their meanings: < (less than), > (greater than), <= (less than or equal to), and >= (greater than or equal to). These symbols express relationships between quantities when they are not equal.
Key Concepts
An inequality is used in algebra to compare two quantities that may have different values. We use four main inequality symbols: $a < b$ is read $a$ is less than $b$ $a b$ is read $a$ is greater than $b$ $a \leq b$ is read $a$ is less than or equal to $b$ $a \geq b$ is read $a$ is greater than or equal to $b$.
Common Questions
What are the four inequality symbols in 7th grade math?
The four symbols are: < (less than), > (greater than), <= (less than or equal to), and >= (greater than or equal to).
How do you write an inequality in algebra?
Replace the word phrase with the appropriate symbol: greater than (>), less than (<), at least (>=), at most (<=). Then write the variable and the threshold value.
What is the difference between < and <=?
< means strictly less than (boundary value NOT included). <= means less than or equal to (boundary value IS included).
What chapter in Big Ideas Math Advanced 2 introduces inequality symbols?
Chapter 11: Inequalities in Big Ideas Math Advanced 2 (Grade 7) introduces inequality symbols and definitions.
How do you read the inequality a >= 18?
This is read as a is greater than or equal to 18. It means a must be at least 18.