Trick to remember 3 and 5

Trick for 3: table

Make a chart like the below one and just prefix  with 0 in the bottom most row,  with 1 in the second ,and with 2 in the top row and just prefix 3 to 0

i.e., prefix 0 to 3,6,9|      prefix 1 to 2,5,8|      prefix 2 to 1,4,7|and 3 to 0
                   3x1=03|                   3x4=12|                  3x7=21|3x10=30
                   3x2=06|                   3x5=15|                  3x8=24|
                   3x3=09|                   3x6=18|                  3x9=27|

Isn't it easy.....

Trick for 5:


Write 0 1 2 3 4 5 twice and just add 0 and 5 at the end alternatively
 Here is your 5 table

5x0=0  0      5x1=0  5
5x2=1  0      5x3=1  5
5x4=2  0      5x5=2  5
5x6=3  0      5x7=3  5
5x8=4  0      5x8=4  5
5x10=5   0