Factors
1, 2, 5, 10 are the only factors for what number?
10
What are the first 5 multiples of 3?
3,6,9,12,15
What is a factor?
A number that gets multiplied with another to get an answer.
Jack has to split 16 students in his class into different groups with equal number of students in each. Not all students can be in one group and each group has to have more than one student. In how many ways can he form these groups?
3 different ways.
2 groups with 8 students
8 groups with 2 students
4 groups with 4 students
Is the number 5 prime or composite?
Prime
What are the factors of 20?
1,2,4,5,10,20
What are the first 5 multiples of 8?
8,16,24,32,40
What is a factor pair?
Two numbers that are multiplied together to give a certain product.
Ryan wants to buy a movie organizer for his 55 movies. Ryan wants to make sure that each row of his organizer can hold the same number of movies. Should Ryan buy the organizer with 3 shelves or 5 shelves. Which should he buy and why?
He should buy the organizer with 5 shelves so each shelf can hold exactly 11 movies.
Is the number 21 prime or composite?
Composite
What are the factors of 18?
1,2,3,6,9,18
What are the first 5 multiples of 10?
10,20,30,40,50
What is a multiple?
A number that is the product of a specific number.
My age this year is a multiple of 8. My age next year will be a multiple of 7. How old am I?
They are 48 years old. 48 is a multiple of 8 and 49 is a multiple of 7
Is the number 51 prime or composite?
Composite
Which whole number has more factors: 32 or 60
60
32 has factors: 1,2,16,32
60 has factors: 1,2,3,4,5,6,10,12,15,20,30,60
A. 12
B. 30
C. 21
D. 18
D. 18
3x6
9x2
What is a prime number?
A number that only has two factors, one and itself.
Mark's Age is a 2 digit number and a multiple of 6 and 8. Mark is younger than 40 years old. How old is Mark?
Mark is 24. 24 is less than 40 and 24 is a multiple of 6 and 8.
6x4=24
8x3=24
Is the number 67 prime or composite?
prime
True or False, all whole numbers have at least two factors?
False, the number 1 only has one factor, itself.
Which multiple has the factors 1, 2, 3,5,6,10,15,30?
30
What is a composite number?
A number that has more than two factors.
Anna is helping the art teacher organize and put 6 crayons in each cup with no crayons leftover. Altogether Anna put more than 30 but less than 40 crayons into the cups. How many crayons did Anna have in total?
Is the number 1 prime or composite?
Neither. One only has one factor, itself.