Page 120 - Basic College Mathematics with Early Integers

CHAPTER HIGHLIGHTS 97

Definitions and Concepts Examples

Section 1.6 Multiplying Whole Numbers and Area

To multiply 73 and 58, for example, multiply 73 and 8, then 73 ; factor
73 and 50.The sum of these partial products is the * 58 ; factor
product of 73 and 58. Use the notation to the right.
584 ; 73 * 8
3650 ; 73 * 50
4234 ; product

To find the area of a rectangle, multiply length times width. Find the area of the rectangle shown.
11 meters

7 meters

#
area of rectangle = length width
= (11 meters)(7 meters)
= 77 square meters

Section 1.7 Dividing Whole Numbers

DIVISION PROPERTIES OF 0 0
= 0
5
The quotient of 0 and any number (except 0) is 0.
7
The quotient of any number and 0 is not a number. 0 is undefined
We say that this quotient is undefined.
507 R 2 quotient and remainder
To divide larger whole numbers, use the process called
long division as shown to the right. divisor 147100 dividend
– 70 5(14)=70
10 Subtract and bring down the 0.
– 0 0(14)=0
100 Subtract and bring down the 0.
– 98 7(14)=98
2 Subtract. The remainder is 2.

#
To check, see that 507 14 + 2 = 7100.
Find the average of 23, 35, and 38.
The average of a list of numbers is 23 + 35 + 38 96
average = = = 32
3 3
sum of numbers
average =
number of numbers