Spiral 1-7
45,002 - 9,880
Jessica has 12 stuffed animals. This is three times as many stuffed animals as her sister. How many stuffed animals does her sister have?
4 stuffed animals
Write 4 factors and 4 multiples for 24.
Sample answers: Factors 1, 2, 3, 4, 6, 8, 12, 24
Multiples: 24, 48, 72, 96...
Is 19 prime or composite? Write all the factors of 19.
Prime: 1, 19
50,000 ÷ 100 =
(Hint: Use mental math)
500
Carter lives on a street where all the house numbers are multiples of 6. Name two possible house numbers between 70 and 80.
72 and 78
Which list shows the first three common multiples of 4 and 6?
A) 2, 4, 6
B) 6, 8, 12
C) 12, 18, 24
D) 12, 24, 36
D) 12, 24, 36
Is 33 prime or composite? Write all factors of 33.
Composite: 1, 3, 11, 33
366 ÷ 4
91 R2
There are 25 classrooms in Nate's school. The maximum number of students per class is 18. What is the greatest number of students who can attend Nate’s school?
450
What is the LEAST COMMON MULTIPLE between 5 and 15?
A) 1
B) 5
C) 15
D) 30
C) 15
Which lists all the factors of 25 that are also prime numbers?
A) 1, 25
B) 5
C) 1, 10, 25
D) 5, 25
B) 5
77 x 66
5,082
Courtney has 36 photos to arrange on a gallery wall. How may arrays can Courtney make with the 36 photos? List ALL possible arrays.
9 arrays total: 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
What two multiples of 3 have a factor of 7?
21 and 42
Which statement is true:
A) The only factors of 3 are 3 and 1; therefore, 3 is prime.
B) The only factors of 4 are 4 and 1; therefore, 4 is prime.
C) The only factors of 5 are 5 and 1; therefore 5 is composite.
D) The only factors of 8 are 8 and 1; therefore 8 is composite.
A) The only factors of 3 are 3 and 1; therefore, 3 is prime.
Which statement is NOT true?
A) 32 is a multiple of 8
B) 6 is a factor of 6
C) 8 is a multiple of 24
D) 5 is a factor of 30
Christopher worked for 23 hours last week and made $17 per hour. He spent $46 on a gift for his mother. Which equation could be used to find the total money, m, Christopher has left?
A) 23 x 17 - 46 = m
B) 23 x 17 + 46 = m
C) 46 x 23 + 17 = m
D) 46 x 17 - 23 = m
A) 23 x 17 - 46 = m
List all the factors of 100
1, 2, 4, 5, 10, 20, 25, 50, 100
Javier says all odd numbers greater than 2 and less than 20 are prime. Is he correct? Explain why? (Bonus points may be given for more thorough answers.)
He is NOT correct because...
Sample answer: 9 is odd and 9 has more than 2 factors (1, 3, and 9).
15 is odd and 15 has more than 2 factors (1, 3, 5, 15).