Factors
What are the factors of 12?
1, 2, 3, 4, 6, 12
What are the first 6 multiples of 3?
3, 6, 9, 12, 15, 18
What are the factors of 5 and what are the first 4 multiples?
Factors: 1, 5
Multiples: 5, 10, 15, 20
2, 3, 4, 5, 6, 7, 8, 9
2,3,5,7
Elias has 8 trading cards. He wants to arrange them in equal rows. He wants to have more than one row and more than one card in each row. How many rows can he make?
2 or 4
What are the factors of 10?
1, 2, 10, 5
What are the first 4 multiples of 6?
6, 12, 18, 24
What are the factors of 16 and what are the first 3 multiples os 2?
Factors: 1, 2, 4, 8, 16
Multiples: 2, 4, 6
Is 31 a prime or composite number?
Prime
Jillian is making bracelets with 9 beads on each bracelet. How many beads might she need total if she makes up to 10 bracelets? (How many for 2 bracelets? 3 bracelets? and so on.)
She will need 9, 18, 27, 36, 45, 54, 63, 72, 81, or 90 beads.
What are the factors of 14?
1, 2, 7, 14
What are the first 4 multiples of 45?
45, 90, 135,180
What are the factors of 20 and what are the first 5 multiples of 5?
Factors: 1, 2, 4, 5, 10, 20
Multiples: 5, 10, 15, 20, 25
Is 63 prime or composite?
Composite
Rina has 48 chocolates. She wants to pack them into equal rows or groups with no chocolates left over. What are some different ways she can arrange the chocolates in equal rows?
Rina can pack them in 1 row of 48, 2 rows of 24, 3 rows of 16, 4 rows of 12, or 6 rows of 8 (and reverse).
What are the factors of 60?
1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60
What are the first 5 multiples of 21?
21, 42, 63, 84, 105
What are the factors of 9 and what are the first 5 multiples?
Factors: 1, 3, 9
Multiples: 9, 18, 27, 36, 45
Is 19 prime or composite?
Prime
A farmer has 72 apple trees to plant in his orchard. He wants to plant them in straight rows such that each row has the exact same number of trees. If he wants more than 1 row and fewer than 10 rows, how many rows can he make?
He can make 2, 3, 4, 6, 8, or 9 rows.
What are the factors of 32?
1,2, 4, 8, 16, 32
What are the first 5 multiples of 32?
32, 64, 96, 128, 160
What are the factors of 4 and what are the first 6 multiples?
Factors: 1, 2, 4
Multiples: 4, 8, 12, 16, 20, 24
Which of the following numbers are composite?
41, 42, 43, 44, 45, 46, 47, 48, 49, 50
42, 44, 45, 46, 48, 49, 50
Rahul is placing stickers in a booklet. On every 4th page, he places a gold star. On every 6th page, he places a silver star. On which pages will he place both a gold and a silver star within the first 60 pages?
He will place both stars on pages 12, 24, 36, 48, and 60.