Basics maths skills that you should know, if you don't then you have a chance now to learn it.

ADDING:

Imagine if you put Jongin and Kyungsoo in a room for a year with everything that they need.          After that year, not only Jongin and Kyungsoo will come out, their babies twin will also come out of that room.

So basically 1+1=2.

SUBTRACTING:

Imagine if  Lay had 6 pieces of candy (special candy,( ͡° ͜ʖ ͡°)  )and you were to slap him and take three pieces. You would then have 3 candies and Lay would also have 3 candies and a crying face.

So 6-3=3

MULTIPLICATION:

So if you had 12 boys, and you wanted to buy each 2 Christmas presents, you would have to do 12 x 2= 24. So you would have to buy 24 presents to make every little child happy.

DIVISION:

Imagine Kyungsoo had Chanyeol tied up on a table so he could cut him in equal piece, Kyungsoo wants to cut Chanyeol in three equal pieces. To do so he will have to measure Chanyeol up.             Because Chanyeol is more or less 180cm, Kyungsoo would have to do:

180 / 3= 60. 

So each Chanyeol's cut will have to be 60cm apart.

Now you can go home and show off that you know Maths.