Factors
What are all the factor pairs of 12.
1 x 12
2 x 6
3 x 4
Which of the following sentences describes a comparison involving multiplication? Choose all three that apply.
a) A movie ticket cost $4 more for adults than children.
b) There are six times as many apples than oranges.
c) 25 is 5 more than 20.
d) A cheetah is twice as fast as a mountain lion.
e) 50 is 10 times as many as 5.
b) There are six times as many apples than oranges.
d) A cheetah is twice as fast as a mountain lion.
e) 50 is 10 times as many as 5.
What is the definition of a prime number?
Give one example of a prime number.
A number with exactly two factors: 1 and itself.
What term describes the following numbers:
4, 9, 16, 25, 36, 49, 64, 81, 100, etc
Square Number
Write the first five multiples of the number 4.
4, 8, 12, 16, 20
What are all the factor pairs of 22?
1 x 22
2 x 11
Carly ran a mile in 7 minutes. Her younger sister took 3 times as long. How many minutes did it take Carly's sister to run a mile?
7 x 3 = 21 minutes
What is the definition of a composite number.
Give two examples of composite numbers. One example must be an odd number. The other example must be an even number.
A number with more than two factors.
Which of the following numbers has an odd number of factors?
5, 15, 24, 30, 36
36 because it's a square number.
What are the first ten multiples of the number 9.
9, 18, 27, 36, 45, 54, 63, 72, 81, 90
What are all the factor pairs of 24?
1 x 24
2 x 12
3 x 8
4 x 6
Emmett read 60 books last year. Emmett read twice as many books as Harper. How many books did Harper read last year?
? x 2 = 60
30 x 2 = 60
Harper read 30 books.
Select the composite numbers from the list below.
4, 5, 6, 9, 11, 21, 36, 40, 55, 57
4, 6, 9, 21, 36, 40, 55, 57
Ms. Smith takes 32 minutes drive to work. It takes her 8 minutes to walk to the bus stop. Which equation could you use to find out how many times longer it takes Ms. Smith to drive to work than it does to walk to the bus stop?
32 x 8 = ?
? x 32 = 8
32 - 8 = ?
? x 8 = 32
? x 8 = 32
Select all the multiples of 7 from the list below.
1, 7, 27, 42, 49, 66, 70, 91, 101
7, 42, 49, 70, 91
What are all the factor pairs of 36
1 x 36
2 x 18
3 x 12
4 x 9
6 x 6
Jack saved 12 dollars. His sister Maggie saved 4 times as many dollars. How many more dollars does Maggie have than Jack?
Step 1: 12 x 4 = 48
Step 2: 48 - 12 = 36
Maggie has 36 more dollars than Jack.
Select the prime numbers from the list below.
7, 10, 13, 15, 24, 25, 27, 31, 45, 51
7, 13, 31
Greta is 4 times as old as her brother. Greta is 20 years old. How old is her brother?
? x 4 = 20
5 x 4 = 20
Greta's brother is 5 years old.
1, 3, 12, 19, 23, 27, 45, 51, 56, 60, 67, 70, 75
3, 12, 27, 45, 51, 60, 75
What are all the factor pairs of 81?
1 x 81
3 x 27
9 x 9
Damian Lillard scored 60 points. He scored 4 times as many points as Anfernee Simons. How many more points did Damian Lillard score than Anfernee Simons?
Step 1: ? x 4 = 60, 15 x 4 = 60
Step 2: 60 - 15 = 45
Damian Lillard scored 45 more points than Anfernee Simons.
Finish the sentence. A prime number could never be a __________ . Choose two ways to finish the sentence.
a) factor of any even number.
b) a product (answer to a multiplication problem)
c) a multiple of any number other than 1 and itself.
d) an even number, excluding the number 2.
c) A prime number could never be a multiple of any number other than 1 and itself.
d) A primer number could never be an even number, excluding the number 2.
I have an odd number of factors. I am a multiple of 3. 9 is one my factors. I am an odd number. I am less than 100, but greater than 10. What number am I?
81
Which numbers are multiples of 4 and factors of 56?
1, 4, 7, 8, 12, 15, 16, 20, 24, 28, 32, 40, 56
4, 8, 28, 56