im studying for finals can someone help me with these questions
1. Which property is demonstrated by this equation?
(1 + 2) + 3 = 1 + (2 + 3)

Commutative Property
Associative Property
Distributive Property

2. Round 99.22898989 to 2 decimal places.
99.22
99.23
99.24
99.25

3. Round 99.22898989 to 3 decimal places.
99.228
99.229
99.230
99.231

4. Round 112.456789 to the thousandths place.
112.45
112.46
112.456
112.457

Question

im studying for finals can someone help me with these questions
1. Which property is demonstrated by this equation?
(1 + 2) + 3 = 1 + (2 + 3)

       Commutative Property
       Associative Property
       Distributive Property


2. Round 99.22898989 to 2 decimal places. 
       99.22 
       99.23 
       99.24 
       99.25 


3. Round 99.22898989 to 3 decimal places. 
       99.228 
       99.229 
       99.230 
       99.231


4. Round 112.456789 to the thousandths place. 
       112.45 
       112.46 
       112.456 
       112.457