TRICK TO WRITE TABLE OF 13 EASILY

like 13 tables s written by writing tables of 1 and 3 seperately next to each other..
1 3
2 6
3 9
4 12 = 1 is carried to 4 = becomes 5 2
5 15 = 1 carried to 5 = 6 5
similarly
6 18 = 76
7 21 = 91
8 24 = 104
9 27 = 117
10 30 = 130

similarly it can be done for any number tables.