## Adding Signed Numbers

- Adding Positive Numbers
- Adding Negative Numbers
- Adding Two or More Numbers with the Same sign
- Adding Numbers with Different Signs
- Exercise in Adding Signed Numbers
- Adding More than Two Signed Numbers
- Pairs of Numbers whose Sum is Zero
- Using Parentheses in Adding Signed Numbers
- Practical Problems: Temperature and Distance
- Summary: Adding Signed Numbers

## Substracting Signed Numbers

- Subtraction as Finding Missing Addends
- Subtracting a Negative Number from a Positive Number
- Subtracting a Larger Number from a Smaller Number
- An Exercise in the Subtraction of a Negative Number
- Using the Number Line to Subtract Signed Numbers
- Subtracting Any Number is the Same as Adding its Opposite
- A Shortcut in Subtracting Signed Numbers
- Summary: Subtracting Signed Numbers

## Signed Fractions

- Why Negative Fractions are Important
- What is it that's Negative About a Negative Fraction?
- Exercise on the Absolute Value of Fractions
- Adding Signed Fractions
- Subtracting Signed Fractions
- Multiplying Signed Fractions
- Dividing Signed Fractions
- Solving Equations Whose Solutions are Negative Numbers or Fractions
- Summary: Signed Franctions

## Multiplying Signed Numbers

- Multiplying Positive Numbers by Negative Numbers
- Multiplying Negative Numbers by Positive Numbers
- Multiplying Two Numbers with Different Signs
- Second Exercise in Multiplying Signed Numbers
- Multiplying Negative Numbers by Negative Numbers
- General Rule for Multiplying Signed Numbers
- Other Ways of Indicating Multiplication by Signed Numbers
- Third Exercise in Multiplying Signed Numbers
- Multiplying Three or More Signed Numbers
- Multiplication by Negative 1
- Fourth Exercise in Multiplying Signed Numbers
- Summary: Multiplying Signed Numbers