**SIMPLE RULES OF MATHEMATICS**

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**1) 3 x 1 = 3 (Multiplying by 1 always results in same number)**

**2) 3 x 2 = 2 x 3 (Multiplication of two numbers result in same value if the order of multiplication is reversed as shown)**

**3) 3x 10= 30**

**3x 100 = 300**

**3 x 1000 = 3000**

**The above shows that when multiplied by values of 10, 100 and 1000 the
result is just adding 0's to the number as shown above.**

**9 x 0 = 0 (Mulitplying any number with 0 is always 0)**

**9 + 0 = 9 (Addition with 0 always results in same value)**

**9 - 0 = 9 (Subtraction with ) always results in same value)**

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