Factors & Multiples
List all the factors of 16.
1, 2, 4, 8, 16
8 x 3 =
24
Prime or Composite?
2
How do you know?
Prime.
2 only has 2 factors. (1, 2)
Colton bought sneakers and socks. The sneakers cost 3 times as much as the socks. The socks cost $16. How much did the sneakers cost?
The sneakers cost $48.
The equation 7 x 3 = 21 can mean:
A. 7 folders and 3 folders together are 21 folders.
B. 21 crayons are 7 times the 3 crayons at the table.
C. The difference between 7 binders and 3 markers is 21.
B.
List four multiples of 8.
16, 24, 32, 40, 48...
7 x 8 =
56
Prime or Composite?
12
How do you know?
Composite.
12 has more than 2 factors. (1, 2, 3, 4, 6, 12)
Easton bought a remote control car and a package of batteries. The car cost 6 times as much as the batteries. The batteries cost $4. How much did the car cost?
The remote control car cost $24.
Dinah picked 40 flowers. That is 4 times as many as her little brother. What equation represents the flowers Dinah picked?
A. 40 divided by F = 10
B. 40 - 4 = F
C. 40 = 4 x F
A
List the factors of 15.
1, 3, 5, 15
3 x 9 =
27
Prime or Composite?
36
How do you know?
Composite
36 has more than 2 factors. (1, 2, 3, 4, 6, 9, 12, 18, 36)
There are 7 students in Emerson's dance class. They each brought 2 tutus to class. The entire dance school needs 3 times as many tutus as the students in Emerson's class brought. How many tutus does the entire school need?
The school needs 42 tutus.
The equation 4 x 2 = 8 can mean:
A. The difference between 4 pencils and 2 pens is 8.
B. 8 markers are 4 times the 2 markers at the blue table.
C. 4 folders and 2 folders together are 8 folders
B
List six multiples of 7.
14, 21, 28, 35, 42, 49...
9 x 8 =
72
Prime or Composite?
17
How do you know?
17 only has two factors. (1, 17)
Cozy saw 3 columns of pencils in a box of 24 Halloween themed pencils. How many pencils are in each column?
There are 8 pencils in each column.
What equation represents:
4 columns of markers in a box of 36 markers
36 divided by 4 = m
m = 9
List all the factors of 24.
1, 2, 3, 4, 6, 8, 12, 24
8 x 4 =
32
1
How do you know?
Neither!
One only has 1 factor. (1)
There are five students in Linus's golfing group. Each golfer brought 4 golf balls. During practice, the group lost 5 balls. Their coach divided the remaining balls among the five golfers. How many did each golfer get?
Each golfer got three balls.
Write an equation for the following problem:
There are 2 students in the purple group. They each brought 3 packs of paper to school. The class needs 6 times as much paper as the purple group brought. How many packs of paper does the class need?
(2 x 3) x 6 = p
6 x 6 = p
36 = p