Pre Algebra Addition
Math-Prof HOME Arithmetic Table of Contents Ask A Question PREV NEXT

All Together Now
Addition

 
 When we add two small numbers together, 
 we can think of it as putting two small groups of stuff together:
 

 

 Put 5 together with 4 and you get 9

 
 When we put two numbers together, it's called adding. 
 In math talk we use numbers and this:
 

 +

 

 It's called a "plus" sign.

 
 Example:
 

 5 + 4

 
 To say what we get, we use this:
 

 =

 

 It's called an "equal" sign.

 
 Example:
 

 5 + 4 = 9

 
 More Examples:
 

 

 

3 + 6 = 9

 

 

2 + 8 = 10

 
 There are a couple of ways to write this stuff. 
 Sometimes we write:
 

2 + 8 = 10

 
 But most of the time we write:
 

 

 
 The way adding works, it doesn't matter which number you write first. 
 You get the same answer either way:
 
 Examples:
 

 
 

   copyright 2005 Bruce Kirkpatrick

Math-Prof HOME Arithmetic Table of Contents Ask A Question PREV NEXT