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 5625.
55 squared = 5x6=30 ... put 25 behind ... is 3025. Another easy one!