G3t3 Studyhelper 01
17 Questions
| Attempts: 191
Factors, Multiples, Prime Numbers, composite Numbers and prime factorization
Questions and Answers
- 1.
A _____ number is a natural number that's not a prime number.
- 2.
In your own words, explain why 1 is not a prime number.
- 3.
Is 23 a prime number?
- A.
Yes
- B.
No
Correct Answer
A. YesExplanation
23 is prime. It has no factors other than itself and 1.Rate this question:
-
- 4.
Select all the numbers that are prime numbers.
- A.
7
- B.
21
- C.
13
- D.
10
Correct Answer(s)
A. 7
C. 13Explanation
7 and 13 are prime.
21 = 7*3 and 10 = 2*5 are not prime.Rate this question:
-
- 5.
Is 35 a prime number?
- A.
Yes
- B.
No
Correct Answer
B. NoExplanation
35 is not a prime number since 35 = 5*7. 35 is divisible by 5 and 7.Rate this question:
-
- 6.
A class of 36 is on a field trip at the zoo. The teacher wants to break the class into groups of the same size. Find all the possible group sizes by writing all the factors of 36.
- A.
1
- B.
2
- C.
3
- D.
4
- E.
5
- F.
6
- G.
7
- H.
8
- I.
9
- J.
10
- K.
11
- L.
12
- M.
14
- N.
16
- O.
18
- P.
20
- Q.
24
- R.
36
Correct Answer(s)
A. 1
B. 2
C. 3
D. 4
F. 6
I. 9
L. 12
O. 18
R. 36 -
- 7.
In your own words why 11 is a prime number.
- 8.
Which is the prime factorization of 30?
- A.
2 x 3 x 3
- B.
2 x 5 x 5
- C.
2 x 3 x 5
- D.
3 x 3 x 5
Correct Answer
C. 2 x 3 x 5 -
- 9.
Which the is the prime factorization of 44?
- A.
4 x 11
- B.
2 x 2 x 11
- C.
2 x 3 x 2 x 5
- D.
4 x 2 x 3
Correct Answer
B. 2 x 2 x 11 -
- 10.
What is the only even pime number?
Correct Answer
2 - 11.
All odd numbers are prime numbers.
- A.
True
- B.
False
Correct Answer
B. False -
- 12.
Describe the error in writing the prime factorization of 36.
- 13.
The year 2013 is the year of the water snake. Is 2013 prime or composite?
Correct Answer
composite - 14.
What is the sum of all the prime numbers from 1-10?
Correct Answer
17 - 15.
All even numbers are multiples of 2.
- A.
True
- B.
False
Correct Answer
A. True -
- 16.
What is the sum of the greatest 1-digit prime number and zero?
Correct Answer
7 - 17.
What is the difference of 20 and the least 2-digit prime number?
Correct Answer
9
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Dec 05, 2016Quiz Edited by
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Jan 14, 2013Quiz Created by
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