Online Update 1/09/12 7th and 8th grade
Use your answer sheet…..ask questions….and Do YOUR BEST 
.
2 cm = ______mm
0.2
A.
2
B.
20
C.
200
D.
Hint
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2. 11,241 g = ______kg
112.41
A.
11,241,000
B.
11.241
C.
0.11241
D.
Hint
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3. 2,400 mL = ______L
0.24
A.
2,400,000
B.
24
C.
2.4
D.
Hint
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4. 7,939 mg = ______ g
7,939,000
A.
79.39
B.
0.7939
C.
7.939
D.
Hint
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5. 57 mL = ______ L
0.0057
A.
0.057
B.
0.57
C.
57,000
D.
Scientific Notation
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1. Write 2,564,000 in scientific notation.
2,564×103
A.
2.564×106
B.
2.564×105
C.
25.64×105
D.
Hint
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2. Which symbol makes the following statement true?
7,500 ______ 7.5 × 103
=
A.
B.
>
C.
<
D.
Hint
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3. Which symbol makes the following statement true?
3.25 × 103 ______ 325
>
A.
=
B.
<
C.
D.
Hint
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4. Write 45,870,320 in scientific notation.
45.87032 × 107
A.
45.87032 × 106
B.
4.587032 × 108
C.
4.587032 × 107
D.
Hint
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5. Which symbol makes the following statement true?
568 ______ 5.1 × 102
=
A.
<
B.
>
C.
1.
What is the scale in the frequency table?
D.
91-100
A.
0-100
B.
51-100
C.
51-60
D.
Hint
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2. What is the interval?
9
A.
10
B.
50
C.
Hint
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51-100
D.
3. How many customer service ratings above 80 did the company receive?
2
A.
12
B.
5
C.
16
D.
Hint
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4. On how many days was the temperature below 76 degrees?
1
A.
6
B.
5
C.
Hint
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5. Choose an appropriate scale for the data
69, 72, 121, 81, 98.
2
D.
70 to 100
A.
65 to 125
B.
70 to 120
C.
40 to 100
D.
Making Predictions
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1. Predict which of these items the store will sell the most of next month.
socks
A.
shorts
B.
ties
C.
shirts
D.
Hint
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2. What would you predict your heart rate would be if you exercise 40 minutes
per day?
0
A.
120
B.
50
C.
10
D.
Hint
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3. How can a line graph be used to make predictions?
It has vertical and horizontal scales.
A.
It displays data.
B.
It shows a trend over time.
C.
It has a title.
D.
Hint
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4. How much money do you predict Classic Comics will make on the Internet
in July?
$130
A.
$110
B.
$120
C.
$100
D.
5. In what month will Classic Comics probably begin to make more than $150
on the Internet?
November
A.
September
B.
October
C.
December
D.
1.
The following are scores on an English exam. The highest score possible is 100. Which is the
correct line plot?
A.
B.
C.
D.
Hint
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2.
Which is the correct line plot for this information?
A.
B.
C.
D.
Hint
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3.
What is the most energy used by any of these states (in hundred trillion BTU's)?
A.
27
28
B.
C.
29
26
D.
Hint
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4.
What is the least energy used by any of these states (in hundred trillion BTU's)?
A.
4
7
B.
C.
6
5
D.
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5.
How many states in this group used at least 17 hundred trillion BTU's of energy?
A.
12
11
B.
C.
10
9
D.
Median, and Mode
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1. Find the mode of {325, 100, 115, 621, 325, 325, 100}.
A.
C.
325
273
B.
D.
115
100
Hint
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2. Find the median of {55, 21, 21, 69, 71}.
A.
C.
55
21
B.
D.
Hint
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3. The mean is the _______ of a set of numbers.
71
47.4
A.
C.
most frequent
highest number
B.
D.
middle number
arithmetic average
Hint
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4. Find the mean of {15, 7, 9, 25, 4}.
A.
C.
13
10
B.
D.
9
12
Hint
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5. Ben races motorcycles for fun. So far, his lap times, in seconds, are 32, 35,
33, and 32. What time must Ben get on his final lap for his average lap time
to be 32.6?
A.
C.
31
32
-and-Leaf Plots
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1. Which value occurred the most often?
B.
D.
33
32.6
A.
C.
78
0
B.
D.
70
77
Hint
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2. What is the difference between the highest and the lowest values?
A.
C.
Hint
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100
84
B.
D.
75
80
3. If the number 178,651 is rounded to 179,000 and plotted on a stem and leaf
plot as 17|9, how would you plot 151,205?
A.
C.
15|2
15|1
B.
D.
151|2
1|15
Hint
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4. Which value occurred most often in group B?
A.
C.
Hint
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8
5
B.
D.
4
2
5. If the number 1600 is plotted on a stem-and-leaf plot as 6 | 1, how would you
plot the number 5200?
A.
C.
10 | 2
5|2
B.
D.
2|5
2|7