# ADDITION VOCABULARY and PROPERTIES T. GOODSON JME.

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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.

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

Which number is the sum? 6 + 3 = 9 Yes, 9 is the sum!

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

2+6=8 8-6=2 3+7=10 10-7=3 4+1=5 5-1=4 9+8=17 17-8=9 5+10=15 15-10=5 Are all examples of inverse operations.

Identity Property Any number plus zero equals that same number. 6 + 0 = 6 24 + 0 = 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. 6+3+4=13 3+4+6=13 4+6+3=13 6+4+3=13 3+6+4=13 4+3+6=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? 1+3+5+7=16 3+7+5+1=16 A. commutative B. associative C. identity D. inverse operation

GREAT JOB!!!