squaring number ending with 5

 

A quick way to square numbers ending in 5 using the formula BY ONE MORE THAN THE BEFORE.

• 75*75= 5625.
• The answer is in two parts: 56 and 25.
• The last part is always 25.The last part is always 25.
• The first part is the number, 7, multiplied by the number "one more", which is 8
• so the number is 7*8= 56
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