Name ____________________

Date __________________

 

Missing Number Addition Worksheet

Lesson 1

 

Problem:

 

 

  982

+

 

  ???

 

 

1693

 

Solution
Step 1:

 

 

  982

+

 

  ???

 

 

1693

1. The ones column must add up 1

to get 3 as missing digit.

 

2 + 1 = 3

                                                                       

Solution
Step 1 Complete:

 

 

  982

+

 

  ??1

 

 

1693

 

 

Solution
Step 2:

 

 

  982

+

 

  ?11

 

 

1693

2. The tens column must add up 1

to get 9 as missing digit.

 

8 + 1 = 9

                                                                                                               

Solution
Step 2 Complete:

     

1

 

 

       982

+

 

   711

 

 

 1693

3. The hundreds column must add up

7 to get 16 as missing digit.

 

The answer is 711.

 

Try two practice problems:

A.

 

  738

+

 

  ???

 

 

1327

B.

 

  865

+

 

  ???

 

 

1237

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