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One of the basic rules of addition is that the order in which we add does not make a difference in the answer. If you add 6+7 and get 13, then you know that 7+6 also equals 13. This is called the commutative property of addition.


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Find Missing Number Addition

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Basic Lesson
Shows the steps required to add the ones column properly.
Standard: MATH 1
Grades: (3-5)
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Intermediate Lesson
Introduction to basic algebra with the use of reverse arithmetic.
Standard: MATH 1
Grades: (3-5)
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Independent Practice 1
Contains 18 missing numbers addition problems. The answers can be found below.
Standard: MATH 1
Grades: (3-5)
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Independent Practice 2
Contains 18 missing numbers addition problems. The answers can be found below.
Standard: MATH 1
Grades: (3-5)
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Homework Worksheet
Contains 18 missing numbers addition problems. A complete example is provided.
Standard: MATH 1
Grades: (3-5)
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Find Missing Number Addition Quiz
10 missing number addition problems. A math scoring matrix is included.
Standard: MATH 1
Grades: (3-5)
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Answer Keys
Answers for the homework and quiz.
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Answer Keys
Answers for both lessons and both practice sheets.
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More Advanced Math Worksheets
More Advanced Worksheets
The next level of math skills.
-Addition Math Trails
-Addition Number Grid
-Addition Word Problems
-Word Problems
Less Advanced Math Worksheets
Remedial Math Worksheets
Skills needed to get to this level.
-Numbers Line Addition
-Using A Number Line to Do Addition
-Number Family (Addition)
-Addition Numbers 0 to 9