**“The Grandpa Project”**

This is a collection of tutorial videos reviewing basic arithmetic skills literally produced for my grandchildren. They are targeted for upper elementary and middle school students not yet ready for Algebra 1.

[This is a work in progress. Here are the currently available videos.]

## Whole Number and Decimal Arithmetic

**Place Value and the Decimal Number System**

**Multiplying or Dividing by 10, 100, 1000, … , etc.**

**Learning the Multiplication Combinations Once and for All**

**Adding and Subtracting: Alignment**

**Multiplying Numbers with Decimal Points**

**Multiplying Positive and Negative Numbers**

**Division of Whole Numbers, Part 1**

**Division of Whole Numbers, Part 2**

## Fractions

**Multiplying and Dividing Chains of Fractions**

**Adding and Subtracting Fractions**

**Comparing Two Fractions: Which is Bigger**

**Converting Improper Fractions to Mixed Numbers**

**Converting Mixed Numbers to Improper Fractions**