Objective(s):
By the end of this lesson the student will be able to:
1. (2m21)
Investigate the properties
of whole numbers: addition fact families
2. 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 commutative operation when dealing with
addition and multiplication. Teaching this as a foundational truth now
will facilitate pre-algebra concepts that your child will meet with in
the future.
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Outline:
Did you know that if
you add 4 and
3, it is the same as adding 3 and 4?
4
3
+ 3
+ 4
7
7
Both problems have
the same answer!
That means that when you add, you can turn the problems upside down and
you will get the same answer. That’s a neat trick! Let’s try some more
problems.
Assignment(s):
5
6
3
2
+
6
+ 5
+ 2
+ 3
2
7
5
4
+ 7
+ 2
+ 4
+ 5
8
3
2
9
+ 3
+ 8
+ 9
+ 2
Circle the correct
choice:
1. The answers for the
first row
are (in order)
a) 12, 12, 6, 6
b) 11, 11, 11, 11
c) 11, 11, 5, 5
d) 9, 9, 11, 11
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