find the square of 75 by using formula
Answers
Answer:
Let us make a table of squares up to 25 for your convenience.
Number
Square
Number
Square
1
1
13
169
2
4
14
196
3
9
15
225
4
16
16
256
5
25
17
289
6
36
18
324
7
49
19
361
8
64
20
400
9
81
21
441
10
100
22
484
11
121
23
529
12
144
24
576
25
625
Approach
Step1: Difference of number from 25 will be the first two digits of the square.
Step2: Take difference from 50 => whatever value you get , square it => will give you last two digits. If square is having three digits, consider last two digits and remaining digit will be forwarded as a carry.
Note: Squares of 1,2,3 will have only one digit. So, you need to write the corresponding squares as 01,04,09.
Step3: If there is a carry from Step2, add it to the value you got in step1, this will be final first two digits of square.
Answer:
75² = 5625
This is the square of 75.