-b Practice
For use with pages
Date
236-240
Find the GCF of the numbers by listing the factors.
L.
42,86
2:
4.
122,76
5. 24,48,32
125,50
3.
54,4g
6.
20,35,45
Find the GGF of the numbers using factor trees.
7.
10.
12,42
'9.
100,75
L1,. 64,:114
25,75
9,, 9,54
L2. 80,62,50
Find the GGF of the numbers using either method.
Lg.' 12,32
L4.
40,24
15.
16. 38,152
L7.
82,42
18.147.105
19.
14,70
Describe and correct the error in finding the GCF of 36 and 45.
36
6x6
l-----2x3x2x3
---- I
45
9x5
\
3x,3x5
,/\
3+3=6,sotheGCFis6.
Copyright @ McDougal Littell/Houghton Mffiin Company
McDougial Litteil Math, Gourse 1
All rights reserved.
Chapter
5
Practice Workbook
6r
bsh
:(5.2)
Yy
Name
Practice
For use with pages
236-240
20. A grocery store wants to display
12 apples and 15 oranges in equal
rows, but does not want to mix the fruits. What is the greatest
number of fruits that they could have in each row? How many rows
will they have of each type of fruit?
21,,,
In an orchestra there are 4 piano players, 8 drummers, 16 trumpeters,
and 12 saxophone players. Each row of the orchestra must have the
same number of players without mixing the instruments. How many
instruments will be in each row? How many rows of each type of
instrument will be in the orchestra?
22. You
are planting 12 oak trees, 15 maple trees, and 9 spruce trees in a
pprk. You want to plant equal groups of trees without mixing types
of trees. What is the greatest number of trees that can be planted in
each group?
23. Find two composite
numbers whose GCF is 4 and whose sum is 28.
L
62
McDougal Littell Math, Gourse 1
Chapter
5
Practice Workbook
Copyright @
McDogd
l.lilfl@lnon
Mifflin Company
All dghts reserved.
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