INTRODUCTORY NOTE

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It is a general impression among highschool students and their parents that Mathematics is a very tough subject to digest.In fact, about 40% of a student's study time is utilized for mathematics only.It is obvious and essential because mathematics is not a novel or a collection of short stories which you finish in one go. It is a subject which asks for visualization, computing skills,power of analysis and persistence in effort.

MATHEMATICS differs from other subjects in the sense that you cannot afford to forget basic concepts and methods you have studied previously.You can and sometimes you do forget the story of a king and his adventures which you were tought in Class VI or Class VII. You cannot afford to forget Methods of Factorization or Mathematical Identities when you enter Class X.The story of Class VII has no connection to the one you are going to study in Class X, but the topics of mathematics do have basic connections as you move forward. This aspect makes Mathematics an entirely different subject.

REMEMBER:

MATHEMATICS, AS FAR AS I HAVE EXPERIENCED AND ENJOYED, IS NOT A TOUGH SUBJECT AT ALL

WHAT YOU MUST REMEMBER

The following is a list of some important mathematical rules, formulas, methods, etc. ,which you have already studied uptil now and which you cannot afford to forget.Most of the students ignore this very important fact and it is too late when they realise what they missed.You must remember:

• Tables of 1-20(at least)


• Squares of 1-25(at least)


• Cubes of 1-12


• Decimal Calculations


• Percentage Calculations


• Calculation of HCF/GCF and LCM


• Conversion of Units(e.g. 1 m= 100 cm)


• All important Mathematical Identities and their Proper Use.


• All methods of factorization


• Rules of Indices


• Rules and Methods connected to Ratio and Proportion


• All Geometrical Definitions and Concepts(point,ray,line.angle,plane,etc.)


• Types of Triangles and Quadrilaterals


• Properties of Triangles and Quadrilaterals


• Formulas to calculate Perimeter, Area, Volume,etc.


• Preliminary Trigonometry


• Preliminary Set Theory and Set Operations.

Once you have mastered these all, your studies will become much easier and more interesting.

A PUZZLE FOR FUN

Harsh went to a departmental store to purchase something.He spent half of the total amount he had when he entered the store.When he came out he had just as many paise as he had rupees while entering the store and half as many rupees as he had paise while entering the store.What amount actually Harsh carried when he entered the store?