## Exponential Expression

Exponential Expression If a is a real number and n is a natural number,  an  =  a .a .a ……a, n factors of a where n is the exponent,…

## Divide real numbers

Divide real numbers   The result of dividing one number by another is called the quotient. For example, when 45 is divided by 3, the quotient is 15. To define…

## Find the reciprocal of a number

Find the reciprocal of a number    Earlier, subtraction was defined in terms of addition. Now, division is defined in terms of multiplication. The definition of division depends on the…

## Multiply real numbers

Multiply real numbers  The answer to a multiplication problem is called the product. For example, 24 is the product of 8 and 3. The rules for finding signs of products…

## Subtract real numbers

Subtract real numbers    Recall that the answer to a subtraction problem is called the difference. Thus, the difference between 6 and 4 is 2. To see how subtraction should…

Adding Real Numbers Like signs :- To add two numbers with the same sign, add their absolute values. The sign of the answer (either + or -) is the same…

## Use inequality symbols

Use inequality symbols   The statement 4 + 2 = 6 is an equation; it states that two quantities are equal. The statement 4 ≠ 6 (read “4 is not…

## Use absolute value.

Use absolute value. Geometrically, the absolute value of a number a, written 0 a 0, is the distance on the number line from 0 to a. For example, the…