# NEW MATH LESSONS

**Last updated:** December 31, 2020

Below is the list of **newly published** math lessons. The lessons are organized in reverse chronological order. This page will be updated often so please come back from time to time to check if there’s an update. As always, please don’t hesitate to reach out to me if you found any typos or content errors. My email is **contact(at)chilimath.com**. I can’t thank you enough for visiting my site. Have a wonderful rest of your day! Cheers!

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Mathematical Induction (Summation)

Perimeter of a Rectangle Word Problems

Divisibility Rules for 7, 11, and 12

List of Prime Factorizations of Integers from 801 to 1,000

List of Prime Factorizations of Integers from 601 to 800

List of Prime Factorizations of Integers from 401 to 600

List of Prime Factorizations of Integers from 201 to 400

List of Prime Factorizations of Integers from 2 to 200

Fundamental Theorem of Arithmetic

Square Root of a Prime Number is Irrational

Creating Math Website Using WordPress

Let n be an integer. If n^2 is odd, then n is odd.

Let n be an integer. If n^2 is even, then n is even.

Change-of-Base Formula for Logarithms

Algebraic Sentences Word Problems

Proofs of Logarithm Properties

Converse, Inverse, and Contrapositive of a Conditional Statement

Truth Tables of Five (5) Common Logical Connectives or Operators

If a < b, then a < {\Large{{{a + b} \over 2}}} < b.

Multi-Step Equations Practice Problems with Answers

Two-Step Equations Practice Problems with Answers

Introduction to Truth Tables, Statements, and Logical Connectives

One-Step Equations Practice Problems with Answers

There are infinitely many prime numbers.

If a divides b and b divides c, then a divides c

Prove: The Sum of Two Even Numbers is an Even Number

Prove: The Sum of Two Odd Numbers is an Even Number

Sum of Consecutive Odd Integers Word Problems

Sum of Consecutive Even Integers Word Problems

Sum of Consecutive Integers Word Problems

Pythagorean Triples: How to Generate Pythagorean Triples using a Formula

Product of GCF and LCM of Two Positive Integers

Use Prime Factorization to Find LCM

Use Prime Factorization to Find GCF

Finding Least Common Multiple using the List Method

Finding All the Factors of a Whole Number using the Rainbow Method