Factor Pairs
List TWO factor pairs of 45.
(1, 45) (3, 15) (5, 9)
2 or 13
List 5 multiples of 8.
8: 8, 16, 24, 32, 40...
Is 11 prime or composite?
Prime
List ALL the factor pairs for 50.
(1, 50) (2, 25) (5, 10)
Besides 1 and 57, what is a factor of 57?
3 or 19
Which of the following is NOT a multiple of 12?
36
52
48
144
52
List five prime numbers less than 50.
3, 7, 11, 13, 23...
List all the factor pairs for 36.
(1, 36) (2, 18) (3, 12) (4, 9) (6, 6)
Draw an array that shows two factors of 15. Then, write the factor pair it represents.
(1, 15)
(3, 5)
List eight multiples of 9 in ascending order.
9: 9, 18, 27, 36,45, 54, 63, 72...
Look at the factors of 12 below:
(1, 12) (2, 6) (3, 4)
How many factors are composite numbers?
4 factors
How many factors does 36 have?
9 factors
Maria is organizing her sticker collection into equal rows. She has 28 stickers. If she wants each row to have the same number of stickers and no stickers left over, how many stickers could she put in each row?
Find all the possible numbers of stickers per row.
(1, 28) (2, 14) (4, 7)
1 row of 28 stickers OR 28 rows of 1 sticker
2 rows of 14 stickers OR 14 rows of 2 stickers
4 rows of 7 stickers OR 7 rows of 4 stickers
List three multiples that are the SAME for 8 and 12.
Both 8 and 12 have multiples of: 24, 48, and 72
Leila is helping organize the school library.
She has exactly 29 books to arrange on a shelf in equal stacks, with no books left over.
If Leila can only make one type of equal stack (for example, all stacks of 1 book don't count for this question because that always works), is 29 a prime or composite number? Draw an array to explain.
Prime (show array)
List all the factor pairs for 96.
How many factors does 96 have?
(1, 96) (2, 48) (3, 32) (4, 24) (6, 16) (8, 12)
96 has 12 factors.
Jacob has 42 pencils that he wants to share equally among his friends for an art project.
First, he gives away 6 pencils to his teacher for the classroom supply.
Then, he divides the remaining pencils into equal groups, with no pencils left over.
If each friend gets the same number of pencils, what are all the possible numbers of friends Jacob could have?
(1,36), (2,18), (3,12), (4,9), (6,6)
Jason could have this many friends: 1, 2, 3, 4, 6, 9, 12, 18, or 36.
Caleb is making teams for a relay race. Each team must have 7 players. If there are between 30 and 50 students at the event, what is the smallest number of students that could be there so that everyone is on a complete team with no one left out?
35 students
Mrs. Carson is organizing prizes for a class party. She has 37 small toys.
First, she gives away 3 toys to another class.
Then, she tries to arrange the remaining toys into equal prize bags, with no toys left over.
If she can only make exactly one type of equal bag (besides 1 bag with all the toys), is the number of remaining toys prime or composite? Draw a picture to show how you know.
She can make 17 bags with 2 toys OR 2 bags with 17 toys. (2, 17) (17, 2)