STAAR Grade 8 Math Answer Key
Item
Position
Item Type
TEKS
Alignment
Maximum
Number of
Points
Correct Answers(s)
Reporting
Category
Readiness
or
Supporting
1
Multiple
Choice
8.1.2.A
1
B
1
Supporting
2
Multiple
Choice
8.3.10.A
1
D
3
Supporting
3
Multiselect
8.2.5.G
2
C, E
See Appendix 1.1
2
Readiness
4
Multiple
Choice
8.3.6.C
1
D
3
Supporting
5
Multiple
Choice
8.2.4.A
1
A
2
Supporting
6
Multiple
Choice
8.3.7.B
1
D
3
Readiness
7
Multiple
Choice
8.2.5.F
1
B
2
Supporting
8
Drag and
Drop
8.3.10.C
2
(x – 4, y + 3)
See Appendix 1.2
3
Readiness
9
Multiple
Choice
8.1.2.B
1
B
1
Supporting
10
Multiple
Choice
8.2.8.C
1
A
2
Readiness
11
Multiple
Choice
8.3.3.B
1
C
3
Supporting
12
Multiple
Choice
8.4.5.D
1
A
4
Readiness
13
Multiple
Choice
8.2.9.A
1
D
2
Supporting
14
Multiple
Choice
8.3.7.A
1
C
3
Readiness
15
Drag and
Drop
8.4.12.G
2
$625, $750
See Appendix 1.3
4
Supporting
16
Multiple
Choice
8.2.4.B
1
B
2
Readiness
17
Multiple
Choice
8.4.12.D
1
A
4
Readiness
18
Hotspot
8.1.2.D
2
See Appendix 1.4
1
Readiness
19
Multiple
Choice
8.3.3.C
1
B
3
Readiness
20
Multiple
Choice
8.2.5.I
1
D
2
Readiness
21
Multiple
Choice
8.3.10.C
1
B
3
Readiness
22
Multiple
Select
8.2.5.B
2
A, C
See Appendix 1.5
2
Supporting
23
Multiple
Choice
8.3.7.C
1
D
3
Readiness
1.1
24
Equation
Editor
8.2.4.C
1
See Appendix 1.6
2
Readiness
25
Multiple
Choice
8.3.7.B
1
A
3
Readiness
26
Multiple
Choice
8.2.4.B
1
C
2
Readiness
27
Multiple
Choice
8.3.7.A
1
A
3
Readiness
28
Multiple
Choice
8.4.5.D
1
C
4
Readiness
29
Drag and
Drop
8.2.5.I
2
See Appendix 1.7
2
Readiness
30
Multiple
Choice
8.1.2.D
1
A
1
Readiness
31
Multiple
Choice
8.3.6.A
1
D
3
Supporting
32
Multiple
Choice
8.2.4.C
1
B
2
Readiness
33
Drag and
Drop
8.3.3.C
2
Option 2, Option 1
See Appendix 1.8
3
Readiness
34
Multiple
Choice
8.2.5.G
1
D
2
Readiness
35
Multiple
Choice
8.3.10.D
1
A
3
Supporting
36
Multiple
Choice
8.2.8.C
1
D
2
Readiness
37
Drag and
Drop
8.4.12.D
2
$250.00, $506.25
See Appendix 1.9
4
Readiness
38
Multiple
Choice
8.3.3.A
1
C
3
Supporting
39
Multiple
Choice
8.2.5.A
1
A
2
Supporting
40
Multiple
Choice
8.3.8.D
1
C
3
Supporting
STAAR Grade 8 Math
Appendix
The table shows y as a fun
ct
ion
of
x.
X y
- 4
-5
- 2
- 3
6 5
8 7
Which ordered pairs can also belong to the function?
Sel
ect
TWO corre
ct
answers.
D
(-
4, 3)
D
(-
2, 3)
Cl
(4,
3)
D (6,
8)
Cl
(9,
8)
Rec
tangle MNPQ is transla
te
d 4 units l
eft
and 3 units up. Wr
it
e a rule that describes this
tr
an
sfor
mation.
Move the corr
ect
answer to each box.
Not
all answers will be used.
X + 3 Y - 3 -
4X
3y
X + 4 X - 4 Y + 3 Y - 4
(x,y)
--+
(
i_
x-
4
_!
, j_
y+3
_i
)
Des
mo
nd
wa
nts
to attend a college th
at
costs $15,000 for
th
e first year. Desmond's family has saved $6,000, and
he has applied for a $1,500 scholarship. To have the full amount needed
to
pay for the yea
r'
s tuition, his fam
il
y will
set
aside a fixed amou
nt
of
money each month for the n
ext
12 months.
How much should Desmond's family save each month for the n
ext
12 months to have enough
mo
ney to p
ay
for his
first year of
co
llege?
Move the
cor
rect answer
to
each box.
No
t a
ll
answers will be used.
If Desmond wins the scholarship, his family will need
to
save a minimum of : $625 : per
mo
nth.
I • -
••
•
••
• • '
If Desmond does n
ot
win the
sc
holarship, his family will need to save a min
im
um
of
l $750 : per month.
I
••
•
••
•
•••
'
1.2
1.3
Which values
of
x make the inequa
li
ty true?
x
>¥
Se
lect THR
EE
correct answers.
r:-:7
r······-:
r::::-i
~
L.....J
~
The value of y is 3 more than twice the opposite of x. Which of these represent this relationship?
Select
TW
O correct answers.
Cly=-2x
+ 3
D
y
'" '"
6
.,
.,.
I
I 5
.. J
..
~
3
I
,,
, ,
-
<I
-J
-
_,
_,
I
'
'
.
I I I I I I I
•l
f
-,
;+-14
X
D
X y
15
- 6
- 1
2
3 0
D
X y
- 8 -
13
-4
- 5
0 3
1.4
1.5
T
he graph of a
li
n
ea
r function is shown on the coordinate grid.
y
What are the slope and the y-inter
ce
pt of the function?
Enter numbers in the boxes provided.
slope I~ I
y- intercept ( ID , @ J l
"
0000
@
I
I
I
2
I
3
I
I
4
I
5
I
6
I
I
7
I
8
I
9
I
()
I I
-
I
0
I
a
1.6
The graph of a lin
ea
r fun
ct
ion is shown
on
the grid.
Cr
ea
te an equation that represents the relation
sh
ip shown on the graph.
Move
the correct answer to
ea
ch box. Not all answers will be used.
-4
1
2
2
1
1
2
6
The table d
esc
rib
es
two dilations with the center of dilation at the origin. Which rule d
es
crib
es
each dilation?
Move the correct answer to each b
ox
in the table. Not all answers will be u
se
d.
(x,
y)
~
(2x,
2y)
II
Description
of
Shape Dilated
Ru
le
of
Dil
at
ion
on
a Coordinate Plane
A
tr
iangle is dilated by a
sca
le fact
or
o
f½
-
(x,
vl
- {½x,
½Y
)
A square is
di
lated
by
a
(x,
y)
-
(2x,
2y)
sca
le
fact
or
of
2.
1.7
1.8
A
busin
ess
ow
ner opens a new investment a
cco
unt with a $10,000.00 dep
os
it :
• The inv
es
tment
acco
unt
ea
rn
s 2.
5%
inter
es
t,
co
m
po
unded annually.
• The busin
ess
ow
ner does not plan to make any deposits or withdrawals.
How much inter
es
t will the inv
es
tment account earn at the end of the
fi
rst and second
yea
r
s?
Move the
co
rr
ec
t answer to, each box. Not all answers will be u
se
d.
The
acco
unt will
ea
rn
: $250.00 : in inter
es
t at the end of the first year.
'
--
----
-----
--·
At the end of the second
ye
ar, the
acco
unt will have earned a total of !_$506.25 ! in inter
es
t.
1.9
