Objective(s):
By the end of this lesson the student will be able to:
1. remember this
rule of operations:
Addition
and
Multiplication
can Always be Mixed
up.
For Subtraction
and Division, Same
order is Desired.
Note to
teacher, parent, or tutor:
These problems demonstrate the associative property of addition. The
property
is also true of multiplication. Teaching this as a foundational
truth
now will facilitate pre-algebra concepts that your child will meet with
in the future.
|
Outline:
Did you know that
if you add 4, 3
and 2, it is the same as adding 3, 4 and 2 or 2, 3 and 4? You can turn
the numbers around any way that you like in addition!
4
3
2
3
4
3
+2
+2
+4
9
9
9
When you add, you
can mix the order
of the numbers all around and you will get the same answer. Let’s try
some
more problems.
| 5 |
|
6 |
|
2 |
| 2 |
|
5 |
|
6 |
| +6 |
|
+2 |
|
+5 |
|
|
|
|
|
.
.
.
. |
|
|
|
|
| 2 |
|
7 |
|
4 |
| 4 |
|
2 |
|
7 |
| +7 |
|
+4 |
|
+2 |
|
|
|
|
|
.
.
.
. |
|
|
|
|
| 8 |
|
3 |
|
2 |
| 2 |
|
8 |
|
3 |
| +3 |
|
+2 |
|
+8 |
|
