Dividing Whole Numbers

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Presentation transcript:

Dividing Whole Numbers Chapter 1 / Whole Numbers and Introduction to Algebra Section 1.6 Dividing Whole Numbers

Martin-Gay, Prealgebra, 5ed The process of separating a quantity into equal parts is called division. quotient dividend divisor Martin-Gay, Prealgebra, 5ed

Division Properties of 1 The quotient of any number and that same number is 1. 6 1 5 7 = ¸ Martin-Gay, Prealgebra, 5ed

Division Properties of 1 . . . The quotient of any number and 1 is that same number. 6 1 5 7 = ¸ Martin-Gay, Prealgebra, 5ed

Division Properties of 0 The quotient of 0 and any number (except 0) is 0. 6 7 = ¸ 5 Martin-Gay, Prealgebra, 5ed

Division Properties of 0 . . . The quotient of any number and 0 is not a number. We say that 6 5 7 ¸ are undefined. Martin-Gay, Prealgebra, 5ed

Martin-Gay, Prealgebra, 5ed Helpful Hint Since division and multiplication are reverse operations, don’t forget that a division problem can be checked by multiplying. Martin-Gay, Prealgebra, 5ed

Chapter 1 / Whole Numbers and Introduction to Algebra Here are some key words and phrases that indicate the operation of division. Key Words Examples Symbols divide divide 15 by 3 15  3 quotient quotient of 12 and 6 divided by 8 divided by 4 divided or shared equally $20 divided equally among five people 20  5

Chapter 1 / Whole Numbers and Introduction to Algebra How do you find an average? A student’s prealgebra grades at the end of the semester are: 90, 85, 95, 70, 80, 100, 98, 82, 90, 90. How do you find his average? Find the sum of the scores and then divide the sum by the number of scores. Sum = 880 Average = 880 10 = 88 Martin-Gay, Prealgebra, 5ed