Prime & Composite
A number that only has 1 and itself as factors.
What is a prime number?
Jenna is 11 years old. Her grandma is 6 times older than Jenna. How old is the grandma?
What is 66 years old? (11x6)
6x10=___
A number that has MORE factors than 1 and itself.
What is a composite number?
Jeremy got candy for Christmas. He got 21 pieces of candy. His sister got 3 times as much candy as Jeremy. What equation represents how much candy his sister got?
21x3=C (c represents candy)
Ms. H has 24 students in her math class. Ms. J has half the amount of students. How many students does Ms. J have?
24/2=12 students
3x8=____
24
What kind of number is 7? Prime or composite? Why?
What is a prime number because its only factors are 1 and 7?
Ms. Green is 4 times as old as Mason. Mason is 10 years old. How old is Ms. Green?
10x4=40 years old
30/5=6 in each column
8
Is 16 prime or composite? How do you know?
What is a composite number because it has multiple factors (1,16,2,8,4)?
Ms. Breidenstein bought pants and a top. The pants were 3 times as much as the top. The top costs $15. How much were the pants?
15x3=$45 for the pants
Three multiples of 20 are...
What are 40, 60, 80....
7x_____=42
6
List ALL the factors for 20.
What is 1, 20, 10, 2, 5, and 4?
What equation represents
"35 markers are 7 times the 5 crayons at the purple table"?
7x5=35 markers
Katherine needed cookies for her birthday party. Cookies came in packs of 5. She has 40 people coming to her party. How many packs of cookies will she need?
40/5=8 packs of cookies.
____x5=35
7