Are You Smarter Than an 8 th Grade Math Student?
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Transcript of Are You Smarter Than an 8 th Grade Math Student?
Are You Smarter Than an 8th Grade Math
Student?
Are You Smarter Than an 8th Grade Math
Student?
Are You Smarter Than an 8th Grade Math Student?
Are You Smarter Than an 8th Grade Math Student?
1,000,000
Measurement #1Measurement #1 Measurement #2
Probability & Statistics #1Probability & Statistics #1 Probability & Statistics #2
Geometry & Spatial #1Geometry & Spatial #1 Geometry & Spatial #2
Patterns & Algebra #1Patterns & Algebra #1 Patterns & Algebra #2
Numbers & Operations #1Numbers & Operations #1 Number & Operations #2
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A cell-phone tower that has a transmissionrange of 50 miles is located 40 miles due southof a straight road. Find x, the length of the
section of road that is within the transmission range of the tower.
A 10 miB 30 miC 60 miD 90 mi
A cell-phone tower that has a transmissionrange of 50 miles is located 40 miles due southof a straight road. Find x, the length of the
section of road that is within the transmission range of the tower.
A 10 miB 30 miC 60 miD 90 mi
Measurement #1 Question Measurement #1 Question
Measurement #1 Answer Measurement #1 Answer
CC
30
900
25001600
5040
2
2
222
222
b
b
b
b
cba 30 is half the distance. The total transmission range is 60 miles.
miles603030
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Measurement #2 QuestionMeasurement #2 QuestionTo the nearest square inch, what is the area
of pavement with which the surface of the roller will come into contact in
one complete rotation?
A 753 in2
B 1,507 in2
C 1,708 in2
D 1,909 in2
To the nearest square inch, what is the area of pavement with which the surface of the roller will come into contact in
one complete rotation?
A 753 in2
B 1,507 in2
C 1,708 in2
D 1,909 in2
Measurement #2 AnswerMeasurement #2 Answer
BLateral SurfaceArea
BLateral SurfaceArea
2507,1
)240)(28.6(
)30)(8)(14.3)(2(
2
inS
S
S
rhS
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Probability & Statistics #1 QuestionProbability & Statistics #1 QuestionThe results of a random survey showed that42 out of 80 people plan to vote for Mr. Vu forcity council. Which is the best prediction of thetotal number of votes he will receive if 2,000people vote?
F 25 H 120
G 50 J 1,000
The results of a random survey showed that42 out of 80 people plan to vote for Mr. Vu forcity council. Which is the best prediction of thetotal number of votes he will receive if 2,000people vote?
F 25 H 120
G 50 J 1,000
Probability & Statistics #1 Answer
Probability & Statistics #1 Answer
J = 1,000J = 1,000 half80
42
10002
12000
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Probability & Statistics #2 QuestionProbability & Statistics #2 QuestionWhich description best represents therelationship of the dentist’s data?
F Negative trendG No trendH Positive trendJ Cannot be determined
Which description best represents therelationship of the dentist’s data?
F Negative trendG No trendH Positive trendJ Cannot be determined
Probability & Statistics #2 Answer
Probability & Statistics #2 Answer
F = Negative TrendThe # of cavities decrease as the patient gets older.
F = Negative TrendThe # of cavities decrease as the patient gets older.
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Geometry & Spatial #1 QuestionGeometry & Spatial #1 QuestionQuadrilateral PQRS was dilated to formquadrilateral WXYZ. Which number
best represents the scale factor used to change quadrilateral PQRS
into quadrilateral WXYZ?A B
C D
Quadrilateral PQRS was dilated to formquadrilateral WXYZ. Which number
best represents the scale factor used to change quadrilateral PQRS
into quadrilateral WXYZ?A B
C D
4
1
2
1
2 4
Geometry & Spatial #1 Answer
Geometry & Spatial #1 Answer
C = double
Enlargement: scale factor > 1.
C = double
Enlargement: scale factor > 1.
)2,4(
)21,22('
)1,2(
X
Q
Q
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Geometry & Spatial #2 QuestionGeometry & Spatial #2 QuestionWhich drawing shows a 3-D view of the solid figure represented?
Which drawing shows a 3-D view of the solid figure represented?
A B
C D
Geometry & Spatial #2 Answer
Geometry & Spatial #2 Answer
A: matches both views B: extra cube sticking up C: extra cube sticking out on
bottom D: Missing one cube on the top
A: matches both views B: extra cube sticking up C: extra cube sticking out on
bottom D: Missing one cube on the top
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Patterns & Algebra #1 QuestionPatterns & Algebra #1 QuestionMr. Park’s total monthly charge for local and long-
distance telephone service, c, can be found using the equation c = 20 + 0.07m, where m represents the number of minutes of long-distance calls Mr. Park made during that month. Find the total charge for a month during which Mr. Park made 100 minutes of long-distance calls.
F $7.00G $20.00H $20.07J $27.00
Mr. Park’s total monthly charge for local and long-distance telephone service, c, can be found using the equation c = 20 + 0.07m, where m represents the number of minutes of long-distance calls Mr. Park made during that month. Find the total charge for a month during which Mr. Park made 100 minutes of long-distance calls.
F $7.00G $20.00H $20.07J $27.00
Patterns & Algebra #1 Answer
Patterns & Algebra #1 Answer
J = $27.00J = $27.00
27
720
)100(07.20
07.20
C
C
C
mC
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Patterns & Algebra #2 QuestionPatterns & Algebra #2 QuestionVanita can read an average of 18 pages
duringa 30-minute reading period at school. At thisrate, approximately how long will it take herto read a 380-page book?
A 11 hB 21 hC 23 hD 42 h
Vanita can read an average of 18 pages during
a 30-minute reading period at school. At thisrate, approximately how long will it take herto read a 380-page book?
A 11 hB 21 hC 23 hD 42 h
Patterns & Algebra #2 Answer
Patterns & Algebra #2 AnswerA = 11hr A = 11hr
min630
380
21min30
2118min
380
min30
18
pgpgx
pgpg
hrs
hrs
115.10
5.10min60
min630
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Numbers & Operations #1 QuestionNumbers & Operations #1 QuestionThe area of a square is 125 square meters.Which best represents the length of a side ofthe square?
F 10.8 mG 11.2 mH 11.9 mJ 12 m
The area of a square is 125 square meters.Which best represents the length of a side ofthe square?
F 10.8 mG 11.2 mH 11.9 mJ 12 m
Numbers & Operations #1 Answer
Numbers & Operations #1 Answer
G = 11.2mG = 11.2m
2.11125
1212511
144125121
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Numbers & Operations #2 Question
Numbers & Operations #2 QuestionMs. Gonzalez’s monthly electricity bills for March
through June were $97.09, $103.96, $114.73, and $121.82. She estimated that the electricity cost a total of $400.00 over these 4 months. Which best describes her estimate?
A Less than the actual amount because she rounded to the nearest $100
B Less than the actual amount because she rounded to the nearest $10
C More than the actual amount because she rounded to the nearest $100
D More than the actual amount because she rounded to the nearest $10
Ms. Gonzalez’s monthly electricity bills for March through June were $97.09, $103.96, $114.73, and $121.82. She estimated that the electricity cost a total of $400.00 over these 4 months. Which best describes her estimate?
A Less than the actual amount because she rounded to the nearest $100
B Less than the actual amount because she rounded to the nearest $10
C More than the actual amount because she rounded to the nearest $100
D More than the actual amount because she rounded to the nearest $10
Numbers & Operations #2 Answer
Numbers & Operations #2 Answer
A = Less than the actual amount
because she rounded to the nearest
$100
A = Less than the actual amount
because she rounded to the nearest
$100
best430$
12082.121
11073.114
10096.103
10097
hers400$
10082.121
10073.114
10096.103
10097
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Million Dollar Question
Measurement
Million Dollar Question
Measurement
1,000,000 Question1,000,000 Question∆EFG is similar to ∆HJK.
Find the length of JK.A 3 unitsB 7 unitsC 14 unitsD 24.5 units
∆EFG is similar to ∆HJK.
Find the length of JK.A 3 unitsB 7 unitsC 14 unitsD 24.5 units
1,000,000 Answer 1,000,000 Answer
B = 7 unitsB = 7 units
x
x
5.3
31
21
31
5.10
5.3
21
5.10
73
21
3
1
1
21
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