60

6 x 14
=
6 x 10
+
6 x 4
=
 
+
 
=
 
3 x 18
=
3 x 10
+
3 x
=
 
+
 
=
 
7 x 15
=
( 7 x 10 )
+
( x 5 )
=
+
=
5 x 19
=
( x )
+
( x )
=
+
=
8 x 14
=
=
=
6 x 16
=
=
=
( 9 x 10 )
+
( 9 x 3 )
=
+
=

 

5 x 12 =  = 7 x 12 3 x = 42  x 25 = 50
6 x 13 =   = 5 x 13   x 16 = 48  x 25 = 75
4 x 15 =  = 2 x 28 2 x = 32 4 x 24 =

 

x
10
3
13
x
10
5
15
x
10
20
30
4
6
5
8
12
10
x
20
6
26
x
10
7
17
x
100
5
105
3
2
2
6
4
3
9
8
5

 

61a
  
61b
  
61c
  
61d
5
 
  
5
 
  
7
 
  
 
42
6
 
  
10
 
  
10
 
  
 
60
11
 
  
15
 
  
17
 
  
 
102
 
63
  
 
30
  
20
 
  
3
 
 
28
  
 
60
  
 
81
  
30