Test your skills on the following
problems:
1. 
x + 9 = 9 +
x
is an example of which property?

Choose:




2. 
2( x + 3 ) = 2x + 6
is an example of which property?

Choose:




3. 
x + ( y + 3 ) =
x + ( 3 + y )
is an example of which property?

Choose:




4. 
( 5 y ) • ( 1 ) = 5
y
is an example of which property?

Choose:




5. 
( x y ) z =
x ( y z )
is an example of which property?

Choose:




6. 
( x + 5 ) ( 7 +
x ) =
( x + 5 )•( 7 )+( x + 5 )•( x )
is an example of which property?
(**tough problem!!**)

Choose:




7. 
(y + 2) + (y + 2) = 0
is an example of which property?

Choose:




8. 
is an example of which property?

Choose:




9. 
Determine which equation illustrates the
commutative property. 
Choose:




10. 
Which property is illustrated by the
equation
ax
+ ay = a(x + y) 
Choose:


