Download accent on teamwork

01C-W3210 2/24/05 7:17 AM Page 67
ACCENT ON TEAMWORK
SECTION 1.1
SECTION 1.5
PLACE VALUE Have each student in your group bring
a calculator to class so that you can examine several different models. For each model, determine the largest number
(if there is one) that can be entered on the display of the
calculator. Then press the appropriate calculator keys to
add 1 to that number. What does the display show?
DIVISIBILITY TESTS A number is divisible by 8 if the
number formed by the last three digits is divisible by 8.
Determine whether each of the following numbers is divisible by 8.
LARGE NUMBERS Bill Gates, founder of Microsoft
Corporation, is said to be a billionaire. How many millions
make one billion?
SECTION 1.2
PERIMETERS Find the perimeter of each figure.
15 meters
6 in.
32 meters
8 in.
12 meters
12 meters
6 in.
SECTION 1.3
SUBTRACTION Explain how subtraction is related
to addition. Use this idea to perform the following
subtractions.
9
5
COMMON FACTORS The prime factorizations of 36
and 126 are shown below. The prime factors that are common to 36 and 126 (highlighted in color) are 2, 3, and 3.
36 2 # 2 # 3 # 3
126 2 # 3 # 3 # 7
32 meters
a.
b. 2,496
d. 3,078
f. 27,926
SECTION 1.6
15 meters
6 in.
8 in.
a. 1,216
c. 4,160
e. 16,928
b.
27
13
c.
25
18
SECTION 1.4
MAXIMUM AREA A gardener has 80 feet of fencing
to enclose a rectangular garden. Find the length and width
that will enclose the greatest area.
Find the common prime factors for each of the following
pairs of numbers.
a. 25, 45
c. 18, 45
e. 180, 210
b. 24, 60
d. 40, 112
f. 242, 198
SECTION 1.7
ORDER OF OPERATIONS
Consider the expression
58#2 3#2
3
Insert a set of parentheses somewhere in the expression so
that, when it is evaluated, you obtain
a. 63
c. 21
b. 132
d. 127
67