Factors
The number 12 has 6 factors.
6, 12, 18, 24, 30
Is the number 13 prime or composite?
Prime
A. 33
B. 41
C. 47
D. 51
A. 33
Johnny's mother told him to go pick a number of apples that is prime. Which number could be the number of apples Johnny picked?
A. 5
B. 6
C. 8
D. 9
A. 5
How many factor pairs are in the number 36?
The number 36 is made up of 5 factor pairs.
What is the missing multiple of the number 8?
24, 32, __, 48, 56
40
What makes a number composite?
A composite number has more than one factor pair.
Delilah arranged seashells into four rows. The same number of seashells were in each row. What could be the total number of seashells Delilah arranged?
A. 14
B. 15
C. 16
D. 18
C. 16
What is the only even prime number?
2
List all the factor pairs for the number 48.
Find the missing multiple.
12, 16, 20, ___, 28
24
How many factor pairs does a prime number have?
A prime number has only 1 factor pair, one and itself.
Liv's Bakery is packaging cupcakes into boxes. Each box can hold 6 cupcakes. What could be the total number of cupcakes Liv's Bakery has packaged if all boxes were full?
A. 26
B. 28
C. 30
D. 32
C. 30
What are all the prime numbers on a clock face?
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, and 12
2, 3, 5, 7, and 11
Jim listed out all of the factors for the number 24.
1, 2, 4, 6, 12, and 24.
Is Jim correct? Why or why not?
No, Jim is not correct. He is missing the factor pair 3 x 8.
Which number is multiple of both 8 and 5?
A. 20
B. 24
C. 30
D. 40
D. 40
Which set of numbers contains only prime numbers?
A. {2, 9, 11, 13}
B. {1, 2, 3, 5}
C. {2, 7, 11, 15}
D. {2, 7, 13, 19}
D. {2, 7, 13, 19}
A. 2 + 6
B. 7 + 1
C. 5 + 3
D. 4 + 4
C. 5 + 3
Mr. Robeson's class is trying to guess what number he is thinking of. He tells his class the following:
- The number is a multiple of 2.
- The number is a multiple of 5.
- The number only has 4 factors.
What number could Mr. Robeson be thinking of?
A. 10
B. 12
C. 15
D. 20
A. 10
List all the factors for the number 30 AND circle the factors of 30 that are prime.
1, 2, 3, 5, 6, 10, 15, and 30.
The prime factors of 30 that should be circled are 2, 3, and 5.
Which list contains only multiples of 3?
A. 15, 18, 24, 26
B. 15, 18, 27, 30
C. 12, 15, 21, 25
D. 12, 15, 26, 29
B. 15, 18, 27, 30
Which set of numbers contains exactly 2 prime numbers and 2 composite numbers?
A. {2, 4, 6, 8}
B. {2, 7, 9, 15}
C. {2, 11, 13, 19}
D. {2, 9, 15, 21}
B. {2, 7, 9, 15}
This equation shows a number multiplied by 5.
n x 5 = __
Which statement is true about the product?
A. It is a factor of 8.
B. It is a multiple of 8.
C. It is a prime number.
D. It is an odd number.
B. It is a multiple of 8.
Mrs. Lincoln divided her class into 7 equal groups for a field trip. Which of the following could be the number of students in Mrs. Lincoln's class?
A. 20, 27, 34, or 41
B. 18, 24, 30, or 36
C. 21, 28, 35, or 42
D. 14, 22, 30, or 38
C. 21, 28, 35, or 42