Place Value Data Analysis
Variables
Decimals
Mental Math
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Write the place value of the
underlined digit.
56.421
56.421
hundredths place
What is the whole number
portion of the decimal?
417. 0438
417
What is the place value of the
underlined digit?
34.3269
34.3269
The nine is in the ten thousandths
place.
Write this in number form.
Six hundred forty two tenthousandths
Six hundred forty two tenthousandths
0.0642
Write this number in expanded
form.
31.0456
31.0456 = 30 + 1 + 0.04 +
0.005 + 0.0006
Which type of graph would be
the best for comparing the annual
rainfall in Phoenix, Arizona and
San Antonio, Texas?
A.
B.
C.
D.
Circle graph
Scatter-plot
Line Graph
Bar Graph
C. Bar graph
Find the mode of this set of data.
Be ready to explain your answer.
74, 67, 54, 66, 80, 77, 70, 82,
79, 84, 75
No mode
There is no number that occurs
more often than the others in the
data set.
Find the range in this set of data.
-2, 6, 5, -4, 6, 3, 2
The range is 10.
Find the median in this set of
data.
215, 207, 210, 208, 211,
205, 215,
The median is 210.
205, 207, 208, 210, 211, 215, 215
Find the mean in this set of data.
5.3, 2.7, 3.1, 4, 5.8
The mean is 4.18
Solve the equation for the
variable.
27 = y + 12
y=
y = 15
Solve the equation.
z - 31 = 17
z = 48
Solve the equation.
47 = a + 36
a = 11
Solve the equation.
76 = y - 18
y = 94
Solve the equation.
9n + 1 = 73
n=8
Where does the decimal belong?
0.7 X 12 =
A.
B.
C.
D.
0.84
0.084
8.4
84.0
C. 8.4
27 + 0.185 =
27 + 0.185 = 27.185
2.57 + 7.762 + 0.5 =
2.57 + 7.762 + 0.5 =10.832
15 – 6.108 =
15 – 6.108 = 8.892
If n = 1.78, which equation is
true?
A. n – 0.3 = 2.08
B. 2.3 + n = 4.08
C. n + 0.3 = 1.48
D. 5 – n = 4.22
B. 2.3 + n = 4.08
Greater, equal or less
than?
656.07
656.23
656.07
<
656.23
8.7
X
100 =
8.7
X
100 = 870
0. 64 ÷ 10 =
0. 64 ÷ 10 = 0.064
2x = 38
x=
2x = 38
x = 19
10 x 10 x 10 x 10 x 10 x 10 =
10 x 10 x 10 x 10 x 10 x 10 = 1,000,000