1. Number Systems and Operations
Corresponds to chapter 1.2 MCR text

2. Natural Numbers: Numbers 1 through infinity ∞. Examples: 1,2,3,….
Number Systems
Natural Numbers: Numbers 1 through infinity ∞.
Examples: 1,2,3,….

3. Whole Numbers: the number zero plus the natural numbers.
Examples 0 𝑝𝑙𝑢𝑠, 1,2,3,4…

4. Integers
Integers: Positive or negative numbers that can be written without a fractional component.
Examples: …−3,−2,−1,0,1,2,3…

5. Number Line
We can diagram numbers using a “number line”
Positive numbers point to the right ( “greater than” zero).
Negative numbers point to the left ( “less than” zero).

6. Graphing
Later on, we will add a vertical “number line” and graph in two dimensions.

7. Rational Numbers
Rational Numbers: numbers that can be expresses as ratios.
Examples: − 1 8 , 1 4 , 8 5 , 𝑒𝑡𝑐

8. Irrational Numbers
Numbers that can not be expressed as a ratio
Examples: , 𝜋, 17 , 𝑒𝑡𝑐

9. Real numbers
The real number system includes all rational and irrational numbers.

10. Imaginary numbers
Square root of a negative number such that 𝑖 2 =−1

11. A visual
Imaginary
numbers .

12. Helpful video