Page 1 Number System T- 1-855-694-8886 Email- info@iTutor.com By iTutor.com Page 2 Number System T- 1-855-694-8886 Email- info@iTutor.com By iTutor.com Number system ? In earlier days, people used to exchange their things for other things. The requirement for numbers primarily originated from the need to count. ? They used the numbers 1,2,3,.that served the people for many years because all they needed to count was their crops, and animals. ? Later on numbers such as zero, integers, rational numbers, irrational numbers were introduced. ? There is evidence that as early as 30,000 BC our ancient ancestors were tallying or counting things. That is where the concept of number systems began. © iTutor. 2000-2013. All Rights Reserved Page 3 Number System T- 1-855-694-8886 Email- info@iTutor.com By iTutor.com Number system ? In earlier days, people used to exchange their things for other things. The requirement for numbers primarily originated from the need to count. ? They used the numbers 1,2,3,.that served the people for many years because all they needed to count was their crops, and animals. ? Later on numbers such as zero, integers, rational numbers, irrational numbers were introduced. ? There is evidence that as early as 30,000 BC our ancient ancestors were tallying or counting things. That is where the concept of number systems began. © iTutor. 2000-2013. All Rights Reserved Numbers ? Natural Numbers: ?A natural number is a number that comes naturally, ?Natural numbers are greater than zero we can use this numbers as counting numbers: {1, 2, 3, 4, 5, 6 ….…, }. ? Whole numbers: ?Whole numbers are just all the natural numbers plus a zero: {0, 1, 2, 3, 4, 5, ……………… , }. ? If our system of numbers was limited to the Natural Numbers then a number such as –2 would have no meaning. The next number system is the Integers. © iTutor. 2000-2013. All Rights Reserved Page 4 Number System T- 1-855-694-8886 Email- info@iTutor.com By iTutor.com Number system ? In earlier days, people used to exchange their things for other things. The requirement for numbers primarily originated from the need to count. ? They used the numbers 1,2,3,.that served the people for many years because all they needed to count was their crops, and animals. ? Later on numbers such as zero, integers, rational numbers, irrational numbers were introduced. ? There is evidence that as early as 30,000 BC our ancient ancestors were tallying or counting things. That is where the concept of number systems began. © iTutor. 2000-2013. All Rights Reserved Numbers ? Natural Numbers: ?A natural number is a number that comes naturally, ?Natural numbers are greater than zero we can use this numbers as counting numbers: {1, 2, 3, 4, 5, 6 ….…, }. ? Whole numbers: ?Whole numbers are just all the natural numbers plus a zero: {0, 1, 2, 3, 4, 5, ……………… , }. ? If our system of numbers was limited to the Natural Numbers then a number such as –2 would have no meaning. The next number system is the Integers. © iTutor. 2000-2013. All Rights Reserved numbers ? Integers: ?Integers include the Natural numbers, zero, and the negative Natural numbers. ?Numbers in the form of negative and positive numbers { ….-4, -3, -2, -1, 0, 1, 2, 3,4, …. }. ? Rational number: ?Which can be written in the form of . ?Where p and q are integers and q ? 0 is called a rational number, so all the integers are rational number . q p © iTutor. 2000-2013. All Rights Reserved Page 5 Number System T- 1-855-694-8886 Email- info@iTutor.com By iTutor.com Number system ? In earlier days, people used to exchange their things for other things. The requirement for numbers primarily originated from the need to count. ? They used the numbers 1,2,3,.that served the people for many years because all they needed to count was their crops, and animals. ? Later on numbers such as zero, integers, rational numbers, irrational numbers were introduced. ? There is evidence that as early as 30,000 BC our ancient ancestors were tallying or counting things. That is where the concept of number systems began. © iTutor. 2000-2013. All Rights Reserved Numbers ? Natural Numbers: ?A natural number is a number that comes naturally, ?Natural numbers are greater than zero we can use this numbers as counting numbers: {1, 2, 3, 4, 5, 6 ….…, }. ? Whole numbers: ?Whole numbers are just all the natural numbers plus a zero: {0, 1, 2, 3, 4, 5, ……………… , }. ? If our system of numbers was limited to the Natural Numbers then a number such as –2 would have no meaning. The next number system is the Integers. © iTutor. 2000-2013. All Rights Reserved numbers ? Integers: ?Integers include the Natural numbers, zero, and the negative Natural numbers. ?Numbers in the form of negative and positive numbers { ….-4, -3, -2, -1, 0, 1, 2, 3,4, …. }. ? Rational number: ?Which can be written in the form of . ?Where p and q are integers and q ? 0 is called a rational number, so all the integers are rational number . q p © iTutor. 2000-2013. All Rights Reserved numbers ? Irrational numbers : ?The number can not be written in the form of . ?Pythagorean in Greece were first to discover irrational number . ? 2, 3, are irrational number . q p © iTutor. 2000-2013. All Rights ReservedRead More

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