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Date __________________

 

Adding single digits to double digits

Lesson 1

 

Problem:

 

 

89

+

 

     2

 

Solution
Step 1:

 

 

89

+

 

  2

1. Add ones column place.

9 + 2 = 11

                                                                       

Solution
Step 1 Complete:

1

 

 

89

+

 

  2

 

 

  1

 

 

Solution
Step 2:

1

 

 

89

+

 

   2

 

 

   1

2. Add tens column place.

8 + 1 = 9

 

Solution
Step 2 Complete:

1

 

 

89

+

 

   2

 

 

 91

The answer is 91.

 

Try two practice problems:

A.

 

15

+

 

  1

B.

 

69

+

 

  4

 

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