Skill 4D
Problem Solving: Order Property of Addition
This is just a basic addition problem, however, we want to see if your student knows what will happen if the numbers in the problem are added in a different order. In other words, does your student understand the Order Property of Addition.  If your student gets the answer right but hesitates on giving the answer to the second below the problem, then this skill should still be practiced.

Listen while I read the problem.

Ryan has 13 fish, 7 turtles and 3 dogs.
How many pets does Ryan have in all?
20 pets 23 pets 21 pets none
of these		 don't
know
 
Next question,
will the sum change if the numbers are added in a different order?
yes
no