A square of numbers in which every row, column and diagonal has the same
total is said to be a magic square. We call this total the magic
sum.

An example of a magic square is given below:

The magic sum of this magic square is 18. The name given to the
square is magic as in the past, some people believed that the square had
mystical powers.

Copy the following magic squares and find the missing numbers:

a.

b.

c.

d.

e.

f.

g.

h.

i.

j.

Problem 1.2 Number Pyramids

Adding the numbers in the two squares below the square of interest forms
some number pyramids as shown below.

Complete the following number pyramids such that the number in each square
is the sum of the two numbers below it.