Write and learn "observe the following number and their squares"?

1 - 1
2 - 4
3 - 9
4 - 16
5 - 25
6 - 36
7 - 49
8 - 64
9 - 81
10 - 100

To learn the squares of numbers, simply observe the pattern of squaring each number from 1 to 10.

Observe the following numbers and their squares:

| Number | Square |
|---|---|
| 1 | 1 |
| 2 | 4 |
| 3 | 9 |
| 4 | 16 |
| 5 | 25 |
| 6 | 36 |
| 7 | 49 |
| 8 | 64 |
| 9 | 81 |
| 10 | 100 |
| 11 | 121 |
| 12 | 144 |
| 13 | 169 |
| 14 | 196 |
| 15 | 225 |
| 16 | 256 |
| 17 | 289 |
| 18 | 324 |
| 19 | 361 |
| 20 | 400 |

Note:

- The square of a number is the result of multiplying the number by itself. For example, the square of 5 is 5 x 5 = 25.

Pattern:

- The square of a number is always a perfect square.
- The last digit of the square of a number is the same as the last digit of the number itself.
- The square of an odd number is an odd number.
- The square of an even number is an even number.

Applications:

- Finding the area of squares
- Solving algebraic equations
- Understanding the properties of numbers