Multiples
Which of the following are multiples of 4? Choose ALL that apply: 1, 4, 8, 12, 16.
What is 4, 8, 12, 16?
List all factors for 10.
What is 1, 2, 5, 10?
Is the number 7 prime or composite?
True or False? "All multiples of 5 end with a 0 or a 5
What is true?
If Sarah has 3 times as many marbles as Tom, and Tom has 5 marbles, how many marbles does Sarah have?
3x5=15
Which of the following are multiples of 6? Choose ALL that apply: 1, 6, 18, 24, 30.
What is 6, 18, 24, 30?
Identify each number as prime or composite. List all factors for 14.
What is 1, 2, 7, 14?
Is Maria’s statement correct? “The number 36 is a multiple of 9. That means all of the factors of 9 are also factors of 36.” Explain why or why not.
No, Maria's statement is not correct. The factors of 9 are 1, 3, and 9, but the factors of 36 include 1, 2, 3, 4, 6, 9, 12, 18, and 36. Not all factors of 9 are factors of 36.
True or False? "Every number has 1 as a factor."
What is true.
A puppy can run 4 times faster than a tortoise. If the tortoise runs at a speed of 2 miles per hour, how fast can the puppy run?
4X2=8 miles per hour
What are the first five multiples of 5?
What is 5, 10, 15, 20, 25?
Identify each number as prime or composite. List all factors for 21.
What is 1, 3, 7, 21?
Give an example of a prime number between 10 and 30.
What are 11, 13, 17, 19, 23, and 29?
True or False? "A prime number has exactly two factors: 1 and itself.
True
Grace has 5 times as many marbles as her friend Diana. If Diana has 6 marbles, how many marbles does Grace have?
30 marbles
Which number is both a factor of 60 and a multiple of 3? Choose ALL that apply: 3, 12, 15, 20, 30.
What is 3, 12, 15, 30?
Identify each number as prime or composite. List all factors for 19.
What is Prime? What are factors 1 and 19?
Decide if the following statements are true or false:
All composite numbers are odd.
All prime numbers are even.
A multiple of a number can be less than that number.
All composite numbers are odd: False
All prime numbers are even: False
A multiple of a number can be less than that number: True (for example, 0 is a multiple of every number)
True or False? "The number 12 is a prime number."
False (12 is composite; its factors are 1, 2, 3, 4, 6, and 12.)
A book has 3 times as many pages as a magazine. If the magazine has 40 pages, how many pages does the book have?
To find out how many pages the book has, multiply the number of pages in the magazine by 3:
3×40=1203×40=120
So, the book has 120 pages.
Find the least common multiple (LCM-the smallest common multiple) of 12 and 18.
Answer: The LCM of 12 and 18 is 36.
What is the greatest common factor (GCF-largest factor) of 24 and 36?
What is 12?
List all prime numbers between 1 and 5.
The prime numbers between 1 and 50 are: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47
True or False? "If a number is a multiple of 7, it cannot be a multiple of 14.
False (A multiple of 14 is also a multiple of 7.)
Maria has 4 times as many stickers as her brother. If her brother has 10 stickers, how many stickers does Maria have? Is this an additive comparison or a multiplicative comparison?
o find out how many stickers Maria has, multiply the number of stickers her brother has by 4:
4×10=404×10=40
So, Maria has 40 stickers.
This is a multiplicative comparison because we are comparing how many times more stickers Maria has compared to her brother.