The property which states that the grouping of the addends does not change the sum.
Associative Property of Addition
1+9
10
43+21
64
101+202
303
What is 1,000 more than 11,876.
What is 12,876?
The property that states that the order in which two numbers are added does not change the sum.
Commutative Property of Addition
2+5
7
78+13
91
452+384
836
The number that is 100 less than 9,641.
What is 9,541?
For any number, zero plus that number is the number.
Identity Property of Addition
5+9
14
47+21
68
729+483
1,212
Round 156,402 to the thousands place.
156,000
This is when you are combining two numbers to find out how much they are when put together.
Addition
4+7
11
38+29
67
164+853
1,017
The number that is 10 more than 852.
862
This is when you are taking one number away from another number to find out the difference between the two.
Subtraction
9+8
17
92+74
166
980+357
1,337
3,412+6,587
9,999