Subtraction with help

Example

60 - 35 = ?

 
6
0
=
 
+

-
3
5
 
-
3
5
 
 
 

 
 
 
 
 
 
 
 
 
 

 
=
 
 
+

Solution

60 - 35 = ?

 
6
0
=
 
4
0
+
2
0

-
3
5
 
-
3
5
 
 
 

 
 
 
 
 
 
 
 
 
 

 
2
5
=
 
 
5
+
2
0

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Subtraction with help
Subtraction with help

Number of exercises: