Pre Algebra

Decimal Representation Of Rational NumbersExample 1:    Express (frac { 7 }{ 8 }) in the decimal form by long division method. Solution:    We have, ∴ (frac { 7 }{ 8 }) = 0.875Example 2:    Convert (frac { 35 }{ 16 }) into decimal form by…

What is a Ratio and Proportion RATIO In our day-to-day life, we compare one quantity with another quantity of the same kind by using the ‘method of subtraction’ and ‘method of division’. Example: The height of Seema is 1 m 67 cm and that…

What is the pattern of numbers?PATTERNS Patterns arise due to special arrangements of numbers associated with geometrical figures. The numbers are of different kinds likeNatural numbersPolygonal numbers (a) Triangular numbers (b) Square…

What is the pattern of numbers?PATTERNS Patterns arise due to special arrangements of numbers associated with geometrical figures. The numbers are of different kinds likeNatural numbersPolygonal numbers (a) Triangular numbers (b) Square…

Whole Numbers And Its PropertiesWHOLE NUMBERS Now if we add zero (0) in the set of natural numbers, we get a new set of numbers called the whole numbers. Hence the set of whole numbers consists of zero and the set of natural numbers. It is…

Whole Numbers And Its PropertiesWHOLE NUMBERS Now if we add zero (0) in the set of natural numbers, we get a new set of numbers called the whole numbers. Hence the set of whole numbers consists of zero and the set of natural numbers. It is…

Order of Operations and Evaluating ExpressionsOrder of Operations When a numerical expression involves two or more operations, there is a specific order in which these operations must be performed. When evaluating an expression, proceed in…

Order of Operations and Evaluating ExpressionsOrder of Operations When a numerical expression involves two or more operations, there is a specific order in which these operations must be performed. When evaluating an expression, proceed in…

ProportionsA proportion is a comparison of ratios.A proportion is an equation that states that two ratios are equal, such as Proportions always have an EQUAL sign!A proportion can be written in two ways: In each proportion the first and…

PercentsPercents are used to describe parts of a whole base amount. When one of the parts of the relationship is unknown, we can solve an algebraic equation for the unknown quantity. (The solution methods shown on this page are of an…