ADDITION VOCABULARY and PROPERTIES T. GOODSON JME

Georgia Performance Standards STANDARD: M3N2 Students will further develop their skills of addition and subtraction and apply them problem solving. ELEMENT: a: The students will use the properties of addition and subtraction to compute and verify the results of computation.

ADDITION VOCABULARY

ADDITION Joining two or more addends together.

6+3=9 is an addition sentence

ADDEND The numbers you are adding together to find a sum.

Which numbers are the addends? = 9 Yes, 6 and 3 are the addends!

SUM The answer to an addition problem.

Which number is the sum? = 9 Yes, 9 is the sum!

Inverse Operations Operations that undo each other. Addition and Subtraction are inverse operations = 9 9 – 3 = 6

2+6=8 8-6=2 3+7= =3 4+1=5 5-1=4 9+8= =9 5+10= =5 Are all examples of inverse operations.

ADDITION PROPERTIES

Identity Property Any number plus zero equals that same number = = 24

Commutative Property of Addition When you add two numbers in any order you reach the same sum. 6+3=9 & 3+6=9

Associative Property of Addition When you add three or more addends in different ways, the sum stays the same = = = = = =13

It does not matter what order you put the addends 3,4 and 6… Their sum will always be 13.

Which property is this an example of? 3+0=3 A. commutative B. associative C. identity D. inverse operation

What is this an example of? 4+5=9 9-5=4 A. commutative B. associative C. identity D. inverse operation

Which property is this an example of? 6+8=14 8+6=14 A. commutative B. associative C. identity D. inverse operation

Which property is this an example of? = =16 A. commutative B. associative C. identity D. inverse operation

GREAT JOB!!!