Vocab
A number that has exactly 2 factors
Prime number
Please write the multiplication equation for this multiplicative comparison:
24 donuts are 3 times the 8 donuts at the yellow table
24=3x8
Prime or composite? Be prepared to explain your answer.
7
Prime
List the first 10 multiples of 3
3, 6, 9, 12, 15, 18, 21, 24, 27, 30
Mrs. Roe had 12 students in her class. Each student has 4 folders. How many folders in all? Please write an equation and label your answer. SHOW YOUR WORK
12 x 4 = 48
There are 48 folders in all
A number that has more than two factors
Composite number
Please write the multiplicative comparison for this equation:
4x9=36
36 is 4 times more than 9
Prime or Composite? Be prepared to explain your answer.
73
Prime
its an odd number
7+3=10 (10 is not a multiple of 3 or 9)
73 does NOT end in a 0 or 5
73 is not a multiple of 7
How many factors does 12 have?
List the factors in number order.
12 has 6 factors: 1, 2, 3, 4, 6, 12
1x12
2x6
3x4
Taylor Swift sang 10 songs. Each song was 4 minutes. Howmuch time did she spend singing? Write the equation and label your answer. SHOW YOUR WORK.
4 x 10= 40
She will spend 40 minutes singing
The product of two numbers
a multiple
Mrs. Roe has 6 strawberries. Mr. Elmi has 5 times as many strawberries as Mrs. Roe.
Please write an equation that can be used for this multiplicative comparison. (Include the unknown)
30=6x5
Prime or Composite? Be prepared to explain your answer.
33
Composite
3+3=6
6 is a multiple of 3
Is 18 a multiple of 3?
Yes:
I know this because 8+1= 9 and 3 is a multiple of 9
I know this because 3x6=18
Sam had 42 brownies. He wanted to share them with 6 of his friends. How many brownies will Sam and his six friends get? Write an equation and label your answer. SHOW YOUR WORK.
7 x ?= 42
They will each get 6 brownies
A number that can fit exactly into a given number
a factor
A car is parked next to a building. The height of the car is 3 feet (ft.) The height of the building is 4 times the height of the car. Please show me a multiplication equation that represents the comparison and solve for the height of the building. MAKE SURE TO LABEL!
3x4=12 feet
Prime or Composite? Be prepared to explain your answer
125
Composite
Ends in 5
List the first 10 multiples of 8
8, 16, 24, 32, 40, 48, 56, 64, 72, 80
Mae is buying some new books. She has $45 dollars. Each book costs $5. How many books can she buy? Write an equation and label your answer. SHOW YOUR WORK.
5 x ? = 45
She can buy 7 books
a statement that shows how two factors and their product can be read as a comparison
Multiplicative comparison
There were 16 cats at the park
- There were twice as many dogs at the park.
- Half of the cats left the park
How many animals are still at the park?
40
Please choose all of the prime numbers from the list below (be prepared to explain your answer)
- 20 - 7
- 15 - 13
- 37 - 27
7, 13, 37
How many factors does 28 have?
List the factors in number order.
28 has 6 factors: 1, 2, 4, 7, 14, 28
1x28
2x14
4x7
Brett and Shawn are brothers. Brett is 5 years old. Shawn is 3 times as old as Brett. How old is Shawn?
5 x 3 = 15
Shawn is 15 years old