+ (Plus sign)

We use this sign to add numbers.
Example: If i have one pen and i get another pen then now you have 2 pen
 1 + 1 = 2

- (Minus Sign)

Sometime people called this sign as substract.
Example: If i have 2 kites and i will give kite to my brother then only one will remain with me. 2 - 1 =1

x (Multiply Sign)

This sign means make more number from two numbers.  
Example: 4 x 2 =8

/ (Divide Sign)

This simply means divide.
Example: If me and my friend have to write something and we have only one peace of paper we can divide that between us andd both will write. 8 / 2 = 4

Calculator

Here you can see a calculator. If you understand the signs you can do simple maths on this calculator or student who knows more than these sign and studying in higher standards can use this calculator for complex math problems as well.

Maths calculation Tables 1 to 10

1x1=1
1x2=2
1x3=3
1x4=4
1x5=5
1x6=6
1x7=7
1x8=8
1x9=9
1x10=10

2x1=2
2x2=4
2x3=6
2x4=8
2x5=10
2x6=12
2x7=14
2x8=16
2x9=18
2x10=20

3x1=3
3x2=6
3x3=9
3x4=12
3x5=15
3x6=18
3x7=21
3x8=24
3x9=27
3x10=30

4x1=4
4x2=8
4x3=12
4x4=16
4x5=20
4x6=24
4x7=28
4x8=32
4x9=36
4x10=40

5x1=5
5x2=10
5x3=15
5x4=20
5x5=25
5x6=30
5x7=35
5x8=40
5x9=45
5x10=50

6x1=6
6x2=12
6x3=18
6x4=24
6x5=30
6x6=36
6x7=42
6x8=48
6x9=54
6x10=60

7x1=7
7x2=14
7x3=21
7x4=28
7x5=35
7x6=42
7x7=49
7x8=56
7x9=63
7x10=70

8x1=8
8x2=16
8x3=24
8x4=32
8x5=40
8x6=48
8x7=56
8x8=64
8x9=72
8x10=80

9x1=9
9x2=18
9x3=27
9x4=36
9x5=45
9x6=54
9x7=63
9x8=72
9x9=81
9x10=90

10x1=10
10x2=20
10x3=30
10x4=40
10x5=50
10x6=60
10x7=70
10x8=80
10x9=90
10x10=100