Factors
Which set of numbers includes all the factor pairs for 24?
a. 1 x 24, 2 x 12, 3 x 8
b. 1 x 24, 2 x 12, 3 x 8, 4 x 7
c. 1 x 24, 2 x 12, 3 x 6, 4 x 7
d. 1 x 24, 2 x 12, 3 x 8, 4 x 6
d. 1 x 24, 2 x 12, 3 x 8, 4 x 6
Which list includes only multiples of 3?
a. 1, 3, 6, 9
b. 3, 6, 9, 12
c. 6, 9, 12, 15
d. 1, 3, 5, 7
c. 6, 9, 12, 15
Is 19 a prime or composite number?
prime
The fourth-grade teachers put students in groups for an after-school event.
There is a total of 42 students.
Each group must have the same number of students with no students left over.
The number of students in a group must be greater than 2 and less than 8.
Name two different ways the teachers can put the students into groups.
14 groups of 3
6 groups of 7
7 groups of 6
What do you call a whole number greater than 1 that has only two factors, 1 and itself?
prime number
Name 3 factor pairs for 48.
1 and 48
3 and 16
4 and 12
6 and 8
Create a list of the first eight multiples of the number 8. Order the multiples from least to greatest.
8, 16, 24, 32, 40, 48, 56, 64
Is 33 a prime or composite number?
composite
Courtney has 36 photos to arrange on a gallery wall. How many possible arrays can Courtney make with all 36 photos?
9 arrays - 1 x 36, 2 x 18, 3 x 12, 4 x 9, 6 x 6, 9 x 4, 12 x 3, 18 x 2, 36 x 1
"All of the factors of 34 are even numbers."
false; 1 and 17 are factors of 34 but are both odd numbers
How many factor pairs does 64 have?
4
Jaxon incorrectly claims that 20 is the only common multiple of 5 and 4. What is another common multiple of 5 and 4?
40, 60, 80 or 100
Which of the listed numbers are prime?
1, 2, 3, 5, 6, 8, 9
2, 3, 5
Mr. Beasley is buying pretzels for his snack machines. Each machine can hold 9 packages of pretzels. Assuming all of his machines are out of pretzels, which could be a total number of pretzel packs Mr. Beasley is buying?
a. 40
b. 85
c. 63
d. 56
c. 63
What do you call a whole number greater than 1 that has more than two factors?
Which number below has factor pairs of 3 and 15 AND 5 and 9?
a. 45
b. 50
c. 36
d. 30
a. 45
Which of the following is a multiple of 4?
a. 90
b. 64
c. 34
d. 14
b. 64
Which of the listed numbers are prime?
32, 49, 81, 87, 89, 99
89
Determine whether the numbers below are factors or multiples of 16.
32 and 64
multiples
Tell whether the statement below is true or false.
"72 has more than 10 factors."
how many factor does 102? List them all in order from least to greatest.
8 factors - 1, 2, 3, 6, 17, 34, 51, 102
What is the 8th multiple of 7?
56
Write the factors of 30 that are also prime numbers.
2, 3, and 5
Determine whether the numbers below are factors or multiples of 16.
8 and 16
factors
Tell whether the statement below is true or false.
"The number 144 has an even number of factors."
false; it has 15 factors!