Greatest Common Factor
Using the ladder method, what is found by multiplying all the numbers on the left of the "ladder"?
GCF or Greatest Common Factor
How do you find the Least Common Multiple?
List the multiples of the given numbers until you find one that they share. The smallest one is the LCM
Evaluate the expression y4 + 225 when y = 3
306
A number is divisible by 2 if it is ________________
even
Kyra has 18 cans of regular soda and 12 cans of diet soda. She wants to create identical refreshment tables that will operate during the football game. She also doesn't want to have any sodas left over. What is the greatest number of refreshment tables that Kyra can stock?
6 tables. This is the GCF
Find the GCF of 9 and 24
3
Find the LCM of 4 and 6
12
Find the value of 33
27
What is a factor?
factors are numbers that are multiplied together
Mr. Mister waters one of his plants every 10 days and another plant every 12 days. If he waters both plants today, when is the next time both plants will be watered on the same day?
In 60 days
Find the GCF of 24 and 36
GCF = 12
Find the LCM of 7 and 8
56
Write 3 x 3 x 3 x 3 x 3 x 3 x 3 as a power.
37
What is a product?
A product is the answer to a multiplication problem
A committee organizing a marathon has 48 jugs of water and 32 jugs of sports drink. The committee would like to set up a number of refreshment stations along the marathon course, with the same combination of jugs of water and jugs of sports drink at each station, with no beverages left over. What is the greatest number of refreshment stations that can be set up?
16 refreshment stations. This the GCF
What is the GCF of 18 and 45?
GCF = 9
Find the LCM of 25 and 100
100
Evaluate: 23 - 3(2)
2
Double Jeopardy!
Elsa has 50 shark teeth. She donates half of the teeth to a science center. Then she collects 9 teeth on each of her d ocean dives. Write an expression to represent the number of teeth Elsa has after she collects teeth on d dives.
50 - 25 + 9d
Christina is buying pencils and erasers from the store. Pencils come in packages of 15, but erasers are sold in packages of 20. If Christina wishes to purchase the same number of pencils as erasers, what is the smallest number of erasers that she can buy?
60 erasers. Find the LCM
What is the GCF of 18, 27, and 72?
GCF = 9
Find the LCM of 2, 3, and 10
30
Evaluate: 53 - (10 - 6)2
5 x 5 x 5 = 125 and 42 = 16
so 125 - 16 = 109
A number with only two factors, itself and 1, is known as a ________________ number
prime
You have hip hop lessons every fifth day and boxing lessons every seventh day. Today you have both lessons. In how many days will you have both lessons on the same day again?
35 days. This is the LCM.