Taller de matematicas

1X9-2=7
12X9-3=105
123X9-4=1103
1234X9-5=11101
12345X9-6=111099
123456X9-7=1111097
1234567X9-8=11111095
12345678X9-9=111111093
123456789X9-10=1111111091


1X5+2=7
12X5+3=63
123X5+4=619
1234X5+5=6175
12345X5+6=61731
123456X5+7=617287
1234567x5+8=6172843
123456789X5+9=617283954

1X5+9=14
12X5+8=68
123X5+7=622
1234X5+6=6176
12345X5+5=61730
123456X5+4=617284
1234567x5+3=6172838
12345678X5+2=61728393
123456789X5+1=617283946