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MATH Praxis Exam Questions and Answers All Correct

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MATH Praxis Exam Questions and Answers All Correct What is the scientific notation of 674.9723? A 6.749723 × 102 B 6.749723 × 10-2 C 6.749723 × 103 D 6.749723 × 104 - Answer A 6.749723 × 102 6.749723 × 102 is correct because the 2 notes that the decimal is moved 2 places to the...

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  • September 14, 2024
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  • Exam (elaborations)
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  • MATH Praxis 5003
  • MATH Praxis 5003
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MATH Praxis 5003 2024 Exam Questions
and Answers All Correct

What is the scientific notation of 674.9723?
A
6.749723 × 102
B
6.749723 × 10-2
C
6.749723 × 103
D
6.749723 × 104 - Answer ✔ A
6.749723 × 102
6.749723 × 102 is correct because the 2 notes that the decimal is moved 2 places to the
right which is the original number.

Elona is writing an essay. She writes 3 pages every hour. If her essay is 10 pages long,
how many hours did she spend writing?
In the situation above, what is the dependent variable?
A
The number of essays Elona writes.
B
The number of pages Elona writes.
C
The number of pages per hour Elona writes.
D
The number of hours Elona writes. - Answer ✔ B
The number of pages Elona writes.
The number of pages she writes depends on how long she spent writing. If you think
about the number of pages Elona writes and how many hours she spends writing as a
cause and effect relationship, the number of hours she spends writing is the cause,
which determines the number of pages she wrote, the effect.

Use the following conversion factors to answer the question below.
1 Pa = 0.00750062 mmHg (at 0°C)
1 atm = 1.01375 x 105 Pa
During an experiment, a student measures and records a pressure of 1.20 x 105 Pa.
What is this pressure in atmospheres and millimeters of mercury at 0°C?
A
1.18 atm and 1.60 x 107 mmHg
B

,1.22 x 105 atm and 1.60 x 107 mmHg
C
1.22 x 1010 atm and 900 mmHg
D
1.18 atm and 900 mmHg - Answer ✔ D
1.18 atm and 900 mmHg
Set up a ratio to convert units from Pa to atm and another ratio to convert from Pa to
mmHg.

1.20×105 Pa⋅1 atm1.01375×105 Pa=1.18 atm1.20×105 Pa⋅1.01375×105 Pa1 atm=1.18
atm


1.20×105 Pa⋅7.50062×10−3 mmHg1 Pa=900 mmHg1.20×105 Pa⋅1 Pa7.50062×10−3
mmHg=900 mmHg

Kaitlyn wants to call her best friend, Kirby, after Kirby finishes her work at 5:00 PM, but
Kaitlyn is on a work trip in another time zone. If Kaitlyn's 4 ½ hour flight took off at 7:45
AM and she landed at 10:15 AM local time, at what local time can she call Kirby?
A
6:00 PM
B
7:00 PM
C
3:00 PM
D
4:00 PM - Answer ✔ C
3:00 PM
There is a 2 hour time difference because Kaitlyn would have landed at 12:15 PM in her
original time zone. Kaitlyn is 2 hours behind, so she can call at 3:00 PM.

Simplify the expression: 4(10)^3
A
40
B
200
C
4000
D
400 - Answer ✔ C
4000
The 10 must be cubed first (order of operations) and then multiplied by 4.
4(10)3 = 4(1000) = 4000

, During a trip to Mexico, a traveler noticed that 10.00 US dollars were worth 191.42
pesos. Based on this exchange rate, 300.00 pesos are worth approximately how many
US dollars?
A
6.40
B
15.67
C
20.00
D
27.76 - Answer ✔ B
15.67
Set up a proportion and solve: 10.00 US dollars191.42 pesos=�300 pesos191.42
pesos10.00 US dollars=300 pesosx

3000=191.42�3000=191.42x


�≈15.67 US dollarsx≈15.67 US dollars

Ellie is getting a new rug for her room. Her old rectangular rug is 5 ft by 7 ft. Her new
rug is circular with a diameter of 7 ft. How is the size of the new rug related to the old
one?
A
The new rug is about 3.5 ft² smaller than the old one.
B
The new rug is about 4.5 ft² smaller than the old one.
C
The new rug is about 3.5 ft² larger than the old one.
D
The new rug is about 4.5 ft² larger than the old one. - Answer ✔ C
The new rug is about 3.5 ft² larger than the old one.
Ellie's original rectangular rug has an area of 7 × 5 = 35 ft². Her new circular rug has a
diameter of 7 ft and, therefore, a radius of 3.5 ft. The area of her new rug will be: A =
π(3.5)² ≈ π(12.25) ≈ 38.5 ft². So, the new rug is about 38.5 - 35 = 3.5 square feet larger.

The west wall of a square room has a length of 13 feet. What is the perimeter of the
room?
A
52 feet
B
48 feet
C
169 feet
D
There is not enough information - Answer ✔ A

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