Subtraction with help

Example

33 - 14 = ?

 
3
3
=
 
+

-
1
4
 
-
1
4
 
 
 

 
 
 
 
 
 
 
 
 
 

 
=
 
 
+

Solution

33 - 14 = ?

 
3
3
=
 
2
0
+
1
3

-
1
4
 
-
1
4
 
 
 

 
 
 
 
 
 
 
 
 
 

 
1
9
=
 
 
6
+
1
3

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Subtraction with help
Subtraction with help

Number of exercises: