Page 83 - Basic College Mathematics with Early Integers

Objectives 1.7 DIVIDING WHOLE NUMBERS

Divide Whole Numbers.

Perform Long Division. Suppose three people pooled their money and bought a raffle ticket at a local
fund-raiser. Their ticket was the winner and they won a $75 cash prize. They then
Solve Problems That Require divided the prize into three equal parts so that each person received $25.
Dividing by Whole Numbers.
Divided into
Find the Average of a List
3 equal parts 25 dollars
of Numbers.
75 dollars
25 dollars
25 dollars

3 groups of
25 dollars

Objective Dividing Whole Numbers

The process of separating a quantity into equal parts is called division. The division
above can be symbolized by several notations.

quotient dividend
25
75
375 dividend =25 quotient
3
divisor
divisor

quotient dividend quotient

75÷3=25 75/3=25

dividend divisor divisor

75
(In the notation , the bar separating 75 and 3 is called a fraction bar.) Just as
3
subtraction is the reverse of addition, division is the reverse of multiplication. This
means that division can be checked by multiplication.

25

#
375 because 25 3 = 75 s
∂ ∂
∂
Quotient Divisor = Dividend
#
Copyright 2012 Pearson Education, Inc.
Since multiplication and division are related in this way, you can use your knowl-
edge of multiplication facts (or study Appendix A.2) to review quotients of one-digit
divisors if necessary.

60