**1.1 - Union and Intersection of Sets and Venn Diagram - Video**

**1.2 - Addition of Positive and Negative Integers - Video**

**1.3 - Order of Operations of Integers Using PEMDAS - Video and Exercises**

**1.4 - How to Reduce Fractions to their Lowest Terms - Video and**

**Exercises**

**1.5 - Let us Convert Mixed Numbers to Improper Fractions**

**Video and Exercises**

**1.6 - Converting Improper Fractions to Mixed Numbers**

**- Video and Exercises**

**1.7 - How to Add and Subtract Similar Fractions- Video and**

**Exercises**

**1.8 - Let us Changed Dissimilar Fractions to Similar - Video and Exercises**

**1.9 - Adding and Subtracting Dissimilar Fractions - Video and**

**Exercises**

**1.10 - Addition and Subtraction of Mixed Numbers - Video and**

**Exercises**

**1.11 - Multiplication of Fractions - Video and Exercises**

**1.12 - Division of Fractions - Video and Exercises**

**2.1 - The Absolute Value of a Number - Video and Exercises**

**2.2 - Finding Significant Figures - Video and Exercises**

**2.3 - Rounding Off Significant Figures - Video and Exercises**

**2.4 - Addition and Subtraction of Significant Figures - Video and Exercises**