Factors
What is a factor?
A number you can multiply with another number to equal a given number.
What is a multiple?
Skip counting!
Is 11 prime or composite? Why?
Prime. You can only multiply 1 x 11 = 11
Write this comparison as an equation: 32 is 4 times as many as 8.
32 = 4 x 8
Show all the factor pairs of the number 55.
1x55=55 11x5=55
What do all of these numbers have in common?: 8,16,24,32,40
They are all multiples of 8 OR they all have 8 as a factor.
Is 2 prime or composite? Why?
Prime. You can only multiply 2 x 1 = 2
Write TWO DIFFERENT comparisons for the equation: 3 x 7 = 21
21 is 3 times as many as 7 AND 21 is 7 times as many as 3. YOU MUST HAVE BOTH!
I arrange some cards into 4 rows of 10 cards. What is one different way I can arrange the cards so their are the same amount of cards in each row?
1 row of 40, 40 rows of 1, 2 rows of 20, 20 rows of 2, 5 rows of 8, 8 rows of 5.
List the first five multiples of the number 10.
10,20,30,40,50
What makes a number composite?
You can multiply two numbers together to equal your number AND your number x 1
last year 63 inches of rain fell in Barnegat. This year 7 inches of rain fell in Barnegat. Write an equation to show how many times more rain fell last year than this year.
7 x ? = 63 OR 63 / 7 = ? ?=9
What do these numbers all have in common?: 1,2,3,6,9,18,27,54
They are all factors of 54.
Is 24 a multiple OR a factor of 8?
Multiple: 8,16,24
Is 65 prime or composite? Why?
Composite. 1 x 65 = 65, 5 x 13 = 65
I have 5 comic books. My cousin has 6 times as many comic books as me. Draw a BAR MODEL that shows the number of comic books my cousin has.
6 squares, the number 5 in each square. = 30 comic books.
Linda puts 32 cupcakes into containers. She puts the same number of cupcakes in each container. List all of the numbers of possible cupcakes in each container.
1,2,4,8,16,32
List the first five multiples of the number 12.
12, 24, 36, 48, 60
I'm thinking of two numbers between 10 and 20, they are composite and multiples of 4. What are my numbers?
12 and 16
write a word problem (a story) about the equation: 5 x 3 = ?