Subtraction with help

Example

71 - 25 = ?

 
7
1
=
 
+

-
2
5
 
-
2
5
 
 
 

 
 
 
 
 
 
 
 
 
 

 
=
 
 
+

Solution

71 - 25 = ?

 
7
1
=
 
3
0
+
4
1

-
2
5
 
-
2
5
 
 
 

 
 
 
 
 
 
 
 
 
 

 
4
6
=
 
 
5
+
4
1

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Subtraction with help
Subtraction with help

Number of exercises: