Si
tengo
10
perros
cuantos
me
hacen
falta
para
llegar
a
tener
50
:
____________________
50
+
____________________
=
100
60
+
40
=
____________________
20
+
20
=
____________________
70
+
____________________
=
100
20
+
____________________
=
70
90
+
10
=
____________________
50
+
____________________
=
80
300
+
100
=
____________________
10
+
100
=
____________________
300
+
____________________
=
350
10
+
____________________
=
40
20
+
____________________
=
55
30
+
20
=
____________________
45
+
60
=
____________________
90
+
____________________
=
120
25
+
25
=
____________________
110
+
____________________
=
130
130
+
____________________
=
150
80
+
50
=
13
0
