Square Number
Tips 1: 2 Digit Number which ends in 5
Step1
Multiply the first digit of number, with the next to its number. Ex: 35 isthe number you want to square. 3 x 4 = 12
Step2
Finally add 25 at the end of the result.
Answer: 1225
Tips 2: Any 2 Digit Number
Ex: 47
Step1
Look for the nearest 10 boundary.
3 from 47 to 50
3 from 47 to 50
Step2
Since we went up 3 to 50, now go down 3 from 47 to 44.
Step3
Now mentally multiply 44 x 50 = 2200 - 1st answer.
Step4
47 is 3 away from the 10 boundary 50, Square 3 as 9 - 2nd answer.
Step5
Add the first and second answer, 2200 + 9
Answer: 2209