Properties of Addition
Addition Patterns
Vocabulary
Rounding
Addition
100
6 + 0 = 6
What is the Identity Property of Addition?
100
1 more than 75
What is 76?
100
Doing math in your head.
What is mental math?
100

Round 456 to the nearest tens place

What is 460?

100
192 + 464
What is 656?
200
8 + 7 = 7 + 8
What is the Commutative Property of Addition?
200
2,343; 3,343; 4,343; 5,343 Pattern: Adding ____
What is 1,000?
200
This tells you which operations to group in a number sentence.
What are parentheses?
200

Round 546 to the nearest hundreds plac

What is 500?

200
387 + 251
What is 638?
300
(7 + 6) + 5 = (6 + 5) + 7
What is the Associative Property of Addition?
300
495, 505, 515, ___, ___, 545 Pattern: Adding ____
What is 525, 535, and 10's?
300
A number close to its actual value
What is an estimate?
300
Round 1,295 to the nearest hundreds place.

What is 1,300?

300
834 + 486
What is 1320?
400
This property states that you can change the order of the addends and still get the same sum.
What is the Commutative Property of Addition?
400
10 more than 723 100 more than 723 1,000 more than 723
What is 733, 823, 1,723?
400
The missing number or what you are solving for in a problem
What is the unknown?
400

First add, then round to the nearest tens place:

 56 + 78

What is 130?

400
6,345 + 2,956
What is 9301?
500
This property states that the way in which addends are grouped does not change the sum.
What is the Associative Property of Addition?
500
1,000 more than 9,876 100 more than 9,876 10 more than 9,876 1 more than 9,876
What is 10,876; 9,976; 9,886; 9,877?
500
To use place value to exchange equal amounts when renaming a number.
What is regrouping (to regroup)?
500

First add, then round to the nearest hundreds place: 340 + 521

What is 900?

500
7,895 + 3,647
What is 11,542?
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