ComparoFractionsand Decimals
?
Replace a with 1,),
or = to make; s 0'75 a true sentence'
I * o.zs writethe sentence.
5
0.6 * 0.75 writef asa decimal.
#
0.75
0.6
0.5 0.55 0.6 0.65 0.7 0.75 0'8
0.6 < 0.75 ln the tenthsPlace,6 < 7'
Lf
On a number line, 0.6 is to the left of 0'75,to $ ' O'ZS'
ComparoFractionsto Solvoa ?roblom
the girls
BREAKFASTIn a surveyof students,fr otthe boys andftof
fraction of boys
make their own breakfast. Of those surveyed, do a greater
or girls make their own breakfast?
Write the fractions as decimals and then compu'u ih" decimals'
boys,S:
0.65
0.65
0'68
0.630.640.650.660.670.680.690.70
girls:ffi:0.68
^'^ 13 -17
:Onanumberllne,0.65istotheleftof0'68'Since0'65<0'68'fr'E'
;
\-/I
r q
I luurvLr
llr
rvl
I -So,u greater fraction of girls niake their own breakfast'
:",",...,,..".",- .
ConcoptChecK
" 1" " " " " '''.'"
1. Describe the stepsyou should take to order;, 0'8'and i'
2. Explain how 0.5 and 0.5 are different' Which is greater?
3.oP E NE NDE DG iv e . a n e x a mp le o f a re p e a t in g d e c ima l w h o s e
period is 14.
huided ?ractico
bar to show a
write each fraction of mixed number as a decimal. use a
repeating decimal.
4 ,2
6
.
E ,2
" ' -25
.6.-+
Replaceeach 3 with (, ), or: to make a true sentence'
r.+*o.eo e.0.3*+ ro.f*]
4
-7.15
n
n'-to -8
the united states'
Application 12.TRUCKS Of all the passengertruckssold eachyear in
areStIVs.Are moreSUVsor pickupssold?
pickups arr.rd0.17
f, ur"
Explain.
202 Chapter5 RationalNumbers
EPA
ofEnergy,
U.5.Department
Source:
Write each fraction or mixed number as a decimal. Use a bar to show a
repeating decimal.
3
8
, 14.20
tr.+
lJ.
16. _5
;;
z5
8
17.7#
18.1*21
,r.+
22. _2
2s.+
26. 15
.,
b
9
''. s+
n3
20. -cT
I
,t.-+
4
24.
11
7
28.
12
,r.*
29. ANIMALS A marlin can swim 9 mile in one minute. Write 9 u, u decimab6
rounded to the nearesthundredth.
30. COMPUTERS In a survey,L7 studentsout of 20 said they use a home PC
as a referencesource for school projects.Write 17 out of 20 as a decimal.
Source:NPDOnlineResearch
17d
31. Order *,0.A, and * from leastto sreatest.
6' 9u
Replace each s with (, ), or : to make a true sentence.
32.0.3e +
36.
1-
;
o 0.5
40.6.18
e 6+
,r. * * o.6s
sz.th * 1.01
a+.f o o.+
ss.f *|
sa.
f*$
4r. -0.75*-f
42.0.34s6
so.e! x s.4
-+& -2.0e
nai.
2.i
44. Onanumber line, would
frgruphed to the right or to-the left of
{}
f,?
Explain'
{
1
R
45. Find a terminating and a repeating decimal between *d
Explain
A
f,.
how you found them.
SCHOOL For Exercises46 and
47,use the graphic at the right
and the information below.
28'/":0.28
16"/":0.'1.6
13o/":0.1,3
21"/":0.21
15%: 0.1"5
5% : 0.05
46. Did more or less than
one-fourth of the students
surveyed choosemath as
their favorite subject?
Explain.
1
47. Supposef of the students
in your classchooseEnglish
as their favorite subject.
How does this compare
to the results of the survey?
Explain.
lg.com/self_check_q
uiz
Lesson5-1 Writing Fractions
as Decimals 203