Name ____________________

Date __________________

 

Missing Digit Subtraction

Lesson 1

 

Problem:

 

 

  67

  -

 

  ??

  15

                                                                                                                   

Solution
Step 1:

 

 

  67

-

 

  52

    5

It is required to find a number, which when subtracted from 67, gives a difference of 15.

1. Subtract the ones column place.

7 - 5 = 2

 

Solution
Step 1 Complete:

 

 

 67

-

 

 52

 

 

   5

 

 

Solution
Step 2:

 

 

 67

-

 

 52

 

 

 15

2. Subtract the tens column place.

6 - 1 = 5

 

Solution
Step 2 Complete:

 

 

 67

 -

 52

 

 15

The answer is 52.

 

Try two practice problems:

A.

 

  58

-

 

  ??

  17

B.

 

  75

-

 

  ??

  51

 

 

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