WorksheetsUnit 3: Number Theory
Total questions: 11
Worksheet time: 3hrs 45mins
Name
Class
Date
1.
Which choice lists all the factors for the number 24?
a)
2, 3, 4, 6, 8, 12, 24
b)
2, 3, 4, 6, 8, 12, 24, 36
c)
1, 2, 3, 4, 6, 8, 12, 24
d)
1, 2, 4, 5, 6, 8, 12 ,24
2.
Is 36,928 divisible by 4?
a)
Yes
b)
No
3.
105 is NOT divisible by which number?
a)
1
b)
2
c)
3
d)
5
4.
A prime number
a)
has one factor
b)
has more than 2 factors
c)
has 100 factors
d)
has exactly 2 factors: 1 and the number
5.
All of these are prime except
a)
3
b)
9
c)
2
d)
13
6.
What are the prime factors of 30?
a)
3, 2, 5
b)
1, 2, 3, 5, 6, 15, 30
c)
3, 30
d)
10, 3
7.
What is the prime factorization of 16?
a)
1 x 16
b)
2 x 2 x 4
c)
2 x 2 x 2 x 2
d)
8 + 8
8.
GCF of 99 and 54
a)
9
b)
3
c)
6
d)
8
9.
What is the GCF of 72, 96, and 84?
a)
2
b)
7
c)
12
d)
4
10.
What is the LCM of 32 and 40?
a)
180
b)
160
c)
140
d)
200
11.
What is the LCM of 7, 8 and 10?
a)
280
b)
10
c)
270
d)
560
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