Video and Examples

3. Examples

Example 1: $(-4)+(+9)+(+4)+(-2)=$

Method 1: Collecting "like" signs

Method 2: Collecting "opposite" signs

Example 1a

Example 1b

Example 2: $(+3)+(-5)+(-9)+(+5)+(-3)=$

Method 1: Collecting "like" signs

Method 2: Collecting "opposite" signs

Example 2a

Example 2b