Factors
The factors of 15 are
1 x 15
3 x 5
The multiples of 5 are
5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60
The parking lot at the zoo is full of cars. There are 6 rows of cars. There are 7 cars in each row. How many cars are in the zoo's parking lot?
write an equation to represent the problem.
6 x 7 = n
There are 42 cars in the parking lot
n= 42
Is 2 prime or composite
prime
37 + 59
96
1 x 24
2 x 12
3 x 8
4 x 6
The multiples of 4 are
4, 8, 12, 16, 24, 28, 32, 36, 40, 44, 48
The soccer club bought 48 new soccer balls. There are 8 teams in the club. Each time will get the same number of balls. How many new soccer balls will each team get?
Write an equation to represent the problem.
48 / 8 = m
m= 6
Prime numbers have how many factors?
Only 2
1 and that number
200
Which are not factors of 30:
1,30,4,6,5,2,15,11
4 and 11
The multiples of 9 are
9, 18, 27, 36, 45, 56, 63, 72, 81, 90, 99, 108
One teacher has 9 boxes of crayons with 8 crayons in each box. Another teacher has 6 boxes of crayons with 12 crayons in each box. How many total crayons do both teachers have together?
write an equation to represent the problem.
9 x 8 = m
6 x 12 = n
n + m = c
n= 72
m= 72
c= 144
Is 93 prime or composite?
Composite
567-98
469
1 x 72
2 x 36
3 x 24
4 x 18
8 x 9
The multiples of 8 are
8, 16, 24, 32, 40, 48, 54, 64, 72, 80, 88, 96
Emily collected $68 selling Girl Scout cookies on Saturday. Sara collected 10 times as much money as Emily did. How much money did Sara collect?
Write an equation to represent the problem
68 x 10 = s
s= 680
What is the definition of composite
2 or more factors
example: 12 is composite because it has 3 factor pairs : 1 x 12, 2 x 6, 3 x 4
What is 145 + 24 +199=
368
What are the factors of 144
1 x 144 6 x 24
2 x 72 8 x 18
3 x 48 9 x 16
4 x 36 12 x 12
Which of these numbers are NOT are multiple of 12:
24, 36, 56, 96, 168, 100
56 and 100
Last year Mr. Petersen planted 2 rows of carrots with 8 plants in each row. This year he wants to plant three times as many rows of carrots. How many carrot plants will he plant this year?
Write an equation to represent the problem
2 x 8 = c
c= 16
16 x 3 = e
e= 48
48 plants
Which two numbers are neither prime or composite?
1 and 0
The sum of these two numbers are 124 and the difference is 4. What are the two numbers
64 and 60