Use your calculator to figure out which number is incorrect in the following magic squares.
A magic square has the same sum in each row, column, and diagonal. This sum is called the Magic Number.
(1) Determine the incorrect number in each of the following arrays of numbers that prevents it from being a magic square.
(2) Determine what number should replace the incorrect number so that it is a magic square.
(3) What is the magic number?
| 231
|
308
|
70
|
| 42
|
203
|
371
|
| 336
|
98
|
175
|
| 175
|
91
|
182
|
133
|
224
|
| 112
|
63
|
154
|
105
|
196
|
| 84
|
210
|
126
|
217
|
168
|
| 56
|
147
|
98
|
197
|
140
|
| 203
|
119
|
70
|
161
|
77
|