Square a 2 Digit Number Ending in 5
For this example we will use 25
.
Take the "tens" part of the number (the 2 and add 1)=3.
Multiply the original "tens" part of the number by the new number (2x3).
Take the result (2x3=6) and put 25 behind it.
Result the answer 625.
Try a few more 75 squared ... = 7x8=56 ...
put 25 behind it is 5625.
55 squared = 5x6=30
... put 25 behind it ... is 3025. Another easy one! Practice it on paper first!
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