The document covers several number properties topics including integers, factors, primes, divisibility, fractions, and comparing fractions. Key points include definitions of integers as numbers that are the result of counting, primes as numbers with exactly two factors of 1 and itself, and fractions involving a numerator and denominator. Methods for working with and comparing fractions such as simplifying and finding a common denominator are also outlined.

1. Lesson 1
Number Properties

2. Operations
Add & Subs
Example: Is X an integer?
(1) 4X is an integer.

3. Factors
Definition:
Characteristics:
Only positive integers are considered.
The integer must be an exact divisor.

4. Even - Odd
Even Exponentials
Odd
Operations:
Add & Subs

5. Primes
Definition:
Prime numbers are those that only have
two factors: 1 and itself
Example: from 0 to 40 : {2,3,5,7,11,13,17,19,23,29,31,37}
Obs:
0 and 1 are not primes.
2 is the first and only even prime.
From 3 in advance, all odd numbers.

6. Divisibility
Digits: {0,1,2,3,4,5,6,7,8,9}
Even digits: {0,2,4,6,8} Odd digits: {1,3,5,7,9}
2 5
3 6
4 9

7. Fractions
Operations:
Add & Subs Numerator
Denominator
If…
Mix fraction
1
Proper fraction

8. Mix Fractions
Operations:
Examples:
Add & Subs

9. Comparing Fractions
Strategy:
Simplify the most
Examples: