KNOWING OUR NUMBERS Factors and Multiples Even Numbers
KNOWING OUR NUMBERS ØFactors and Multiples – ØEven Numbers – Numbers which have digits 0, 2, 4, 6, 8 at their once place are called Even Numbers. Ø Odd numbers - Numbers which have digits 1, 3, 5, 7, 9 at their once place are called Even Numbers.
KNOWING OUR NUMBERS ØFactor – A Factor of a given Number is a g number which divides the number without leaving a remainder. Ø Prime factorization : - Prime factorization is the method in which any given number is expressed as the product of prime factors only. ØThere are two methods to find prime factorization – Tree Method and Division Method.
KNOWING OUR NUMBERS Properties of Factors – 1 is the smallest factor of every number The largest factor of a number is the number itself The factors of a number are always smaller than or equal to the number Every number has at least two factors , that is 1 and the number itself.
KNOWING OUR NUMBERS ØProperties of Factors – Ø Common Factor – A number that is factor of two or more numbers is called a common factor
KNOWING OUR NUMBERS ØMultiples – The product of two or more numbers is a multiple of the number that are multiplied
KNOWING OUR NUMBERS ØProperties of Multiples – Ø The smallest multiple of a number is the number it self Ø Every number is multiple of 1 and itself Ø The multiples of a number are equal to or greater than the number Ø There are infinite multiples of a given number Ø The multiples of even number is even Ø The multiples of odd numbers are alternately odd and even numbers
KNOWING OUR NUMBERS ØCommon Multiples – A number that is a multiple of two or more numbers is called a common multiple of those numbers
KNOWING OUR NUMBERS ØTypes of Numbers – Ø Prime Numbers – The Numbers which have exactly two factors , that is 1 and the number itself are called Prime numbers Ø Composite Numbers – Numbers having more than two factors are called composite numbers Ø Twin Prime – Pair of Prime Numbers having difference of 2 are called twin Prime. For example – ( 3, 5 ), ( 5, 7 ) , ( 11, 13 )
KNOWING OUR NUMBERS Ø Co – Prime Numbers – Numbers having no common factors other than 1 are called co – prime numbers. For example – ( 2, 3 ) ( 3, 4 ) , 9 4 , 9 ). . ØPerfect Numbers – If the sum of all the factors of a numbers is twice the number itself , the number is said to be a Perfect number. For example – 6,
KNOWING OUR NUMBERS
KNOWING OUR NUMBERS
KNOWING OUR NUMBERS
KNOWING OUR NUMBERS
KNOWING OUR NUMBERS
KNOWING OUR NUMBERS
KNOWING OUR NUMBERS
KNOWING OUR NUMBERS
KNOWING OUR NUMBERS
KNOWING OUR NUMBERS
KNOWING OUR NUMBERS
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