Card Verification Code can be found on the back of the card, usually
within the signature panel.
can be found on the front of your card, just above the
number on the right side.
Having a younger brother and sister (I am 6 and 3 years older than both), I have had experience helping them over the years with their math classes. On top of this, my mother is also an elementary school teacher and I have sat in and watched her teach children math, in order to gain better insight.