D oes
one side of the equals sign include parentheses?
" I have highlighted the parentheses
in both of the equations. There are parentheses on one side of the
equation."
I
dentify that the other side has more
numbers and no parentheses.
"If 5(3 + 4) has parentheses,
then the other side the equation should not have any parentheses and
it should have more numbers. I know that it has no parentheses, because
there are no parentheses highlighted. Now I need to count the numbers
on each side of the equation. The left side has a 5, a 3 and a 4.
The left side has three numbers. The right side has a 5, a 3, another
5, and a 4. 1,2,3,4. The right side has four numbers. So it has more
numbers and no parentheses."
S ee
the "double number."
"Now I need to look for the double
number. First I am going to look for the side with the parentheses.
The number 5 is outside of the parentheses. I am going to circle it.
There should be two 5's on the other side of the equation. There is
one 5 here that I am going to circle, and one here. So 5 is outside
of the parentheses on the left side of the equation, and written twice
on the right side."
T otal is the same.

Solve each side of the equation
to see if the total is the same on both sides.
"When I solve 5 (3 + 4) I get 35 because 3
+ 4 is 7 and 7 times 5 is 35. That is the same answer I get when I
solve 5 x 3 + 5 x 4 , because 5 x 3 is 15 and 5 x 4 is 20, and 15
plus 20 is 35. These two mathematical statements are examples of the
Distributive Property."
