Multiplication of Numbers  Multiplication of Numbers by Short Cut  Methods  1) Multiplication by 9, 99, 999, 9999                        Rule :-   Place as many zeros to the right of the multiplicand as is the number of nines and from the number so formed , subtract the multiplicand to get the answer .                    Example :- a) Multiply 5763 by 9      5763 X 9 = 57630                       -   5763                   ---------------   Answer        51867 b)Multiply 5763 by 99    5763 X 99 = 576300                        -     5763                   ----------------- Answer ...

Division on Number Maths Short Trick of Number System                                              Maths Short Trick of Multiplication Maths Short Trick of Square and Square-root Maths Short Trick of Percentage Maths Short Trick of H.C.F. and L.C.M. of Numbers Maths Short Trick of Ratio and Proportion Maths Short Trick of Partnership Maths Short Trick of Work and Time Maths Short Trick of Problems of Ages Maths Short Trick of Simple Interest Maths Short Trick of Compound Interest Maths Short Trick of Profit and Loss Division Algorithm:                                                By Euclid's Division Algorithm  a=bq+r where  a=Dividend                               ...

Number system : A study about the characteristics of different numbers is called a number system.  Different types of numbers       1) Natural Numbers       2) Whole Numbers       3) Integers           (a) Positive Integers b) Negative Integers c) Non-Positive Integers d) Non Negative Integers )      4) Rational Numbers       5) Irrational Numbers       6) Real Numbers       7) Imaginary Numbers       8) Even Numbers       9) Odd Numbers       10) Prime Numbers       11) Composite Numbers       12) Co - Prime  Number (1) Natural Numbers :     Counting numbers are called natural numbers. Set of Natural numbers denoted by N Example       N=`{1,2,3,4,5,........ }`      Note -...