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Lesson Tutor: Grade 1 Math Curriculum

  /  Lesson Tutor: Grade 1 Math Curriculum
Number Sense and Numeration Lesson 2 – Turn Around Addition
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

 

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