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5th Gr. Number Theory Review Flashcards | StudBud
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5th Gr. Number Theory Review
5th Gr. Number Theory Review
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A quiz based on basic number theory
Flashcards
13 cards
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Practice quiz
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Questions
13
Answers
1
What is: \sqrt{81}
27
6
3
9
2
What is the prime factorization of 20?
2 * 52
22 * 4 * 5
4*5
22 * 5
3
What is the prime factorization of 72?
72 = 23 * 32
72 = 8*9
72 = 23 * 9
72 = 22 * 33
4
What does a composite number have more than two of?
odd numbers
multiples
even numbers
factors
5
What do we call a number that will go into another number evenly
even number
factor
odd number
multiple
6
What number could x be if: x
2
=64
4
8
16
32
7
Which of these numbers has the following factors (all of them) 1,2,3,4,12.
18
15
4
24
8
Which of these numbers do NOT have 5 as a factor?
3,179,880
78
7,495
75
9
Every multiple of 10 ends in a ...
20
0
5
10
10
Which of these is a square number?
24
25
13
40
11
Which number is divisible by 6?
422
341
246
537
12
A prime number has how many factors?
many
3
0
2
13
Which of the following is a prime number
1
24
13
15
