## Chapter 2: Rational Numbers

## Order of Operations (a.k.a. P.E.M.D.A.S.)

## 2.1 Rational Numbers

What are decimals?

What are equivalent fractions?

Rational numbers explained

What is a percent?

Convert a percent into a decimal

Convert a decimal into a percent

Convert a fraction into a decimal

Convert a decimal to a fraction

What are equivalent fractions?

Rational numbers explained

What is a percent?

Convert a percent into a decimal

Convert a decimal into a percent

Convert a fraction into a decimal

Convert a decimal to a fraction

## 2.2 Adding Rational Numbers

Adding decimals

Adding and subtracting integers with different signs

Adding a negative number to a positive number

Adding fractions with different denominators

Adding and subtracting integers with different signs

Adding a negative number to a positive number

Adding fractions with different denominators

## 2.3 Subtracting Rational Numbers

Rewrite a subtraction problem as an addition problem

Subtracting fractions with different denominators

Subtract a whole number from a fraction

Subtracting decimals

Subtracting fractions with different denominators

Subtract a whole number from a fraction

Subtracting decimals

## 2.4 Multiplying and Dividing Rational Numbers

Is the product or quotient positive or negative?

Multiply and divide rational numbers with different signs

Multiplying a whole number by a fraction

Multiplying Fractions

Dividing fractions

Is it okay to divide by 0?

What's a "Reciprocal"?

The Reciprocal Rule of Division

Dividend versus Divisor

Refresher on long division

Long division with decimals

The repeating decimal

Multiply and divide rational numbers with different signs

Multiplying a whole number by a fraction

Multiplying Fractions

Dividing fractions

Is it okay to divide by 0?

What's a "Reciprocal"?

The Reciprocal Rule of Division

Dividend versus Divisor

Refresher on long division

Long division with decimals

The repeating decimal