A box is drawn around four numbers. Find the product of the top left number and the bottom right number in this box. Do the same with the top right and bottom left num

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Assignment

A box is drawn around four numbers. Find the product of the top left number and the bottom right number in this box. Do the same with the top right and bottom left numbers. Calculate the difference between these products. Investigate further

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The product difference from the two by two square is ten

Part of the investigation is to multiply the top left hand corner number with the bottom right hand corner number.

The equation for this is 12 x 23=276
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My next stage is to times the top right hand corner number with the bottom left hand corner number.

This is 13 x 22 = 286

286-276 = 10

For accuracy reasons I am going to conduct this method to a few more 2x2 boxes to look for common differences.

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7 x 28 = 476

27 x 18 = 486

486 - 476 = 10

From this I came to the conclusion that anywhere on the grid where a 2 x 2 square ...

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