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Pre-Algebra: Chapter 13-1
Square Roots
Radicals are the funny looking things over the numbers. For example, the `sqrt(16)=4` or the `sqrt(121)=11`. Perfect squares are numbers like 25, 49, and 64 because when you take the`sqrt(144)`, you get an answer that is a WHOLE NUMBER, namely 12.
Remember, that the `−sqrt(100)=−10` and that there are usually 2 roots for a square root. The `sqrt(64)= 8 or −8`. We can also write the answer as `±8`. The positive value is called the “principal square root” and the one we use most commonly in 7th grade Pre-Algebra classes.
Algebra: Mixed Practice 2 and 4
Chapter 1
- Integers and the number line
- Commutative and identity properties
- Exponential notation
- Associative properties
- Distributive property of multiplication over addition
- Writing expressions
- Solving equations – introduction
- Reasoning strategies – draw a diagram
- Using formulas
- Reasoning strategies – try, test and revise
Chapter 2
- Integers and the number line
- Rational numbers
- Addition of rational numbers
- Subtraction of rational numbers
- Multiplication of rational numbers
- Division of rational numbers
- Using the distributive property
- Inverse of a sum and simplifying
- Writing equations
- Number properties
This week, we review each chapter using the pages from the back of the textbook. Bring your questions to class!