Square a 2 Digit Number Ending with 5
Here is an interesting trick for square.
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!
Here is an interesting trick for square.
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!