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Rewrite the sum of the numbers as the product of their GCF and another sum. 18 + 42
6(3+7)
Rewrite the sum of the numbers as the product of their GCF and another sum. 75 + 30
15(5+2)
A student expressed a sum of two whole numbers as 5(3+2). What were the two whole numbers?
15 and 10
Lily brings grapes for lunch ever 6 days, and Lane brings grapes every 8 days. If they both brought grapes to lunch today, how many days will it be before they both bring grapes again?
24
What is the LCM of 8 and 12?
24
What is the GCF of 14 and 35?
7
If you are finding the LCM of 10 and another number. What do you know about the common multiple they will have.
The common multiple will end in 0.
How do you find the GCF of 2 numbers?
You list the factors. Look for all of the common factors. Pick the greatest of the common factors
What helpful tool can we use to organize the factors a number has?
a T- chart
What are the factors of 24?
1,2,3,4,6, 8,12,24
List the first 5 multiples of 8
8, 16, 24, 32, 40
How are multiples and factors different?
Multiples go on forever, they are the products. Factors are limited. They are the numbers that can be multiplied to create a number
Val says that the prime factorization of 90 is 2 x 5 x 9. Is she right? Explain.
No, she is not right. She used a composite number (9) in her expression. She should have written 2 x 3 x 3 x 5
What is the prime factorization of 51?
3 X 17
What is the prime factorization of 24
2 x 2 x 2 x 3
What does it mean for a number to be prime?
The number has only 2 factors; 1 and itself
Find the missing number : 31 x _____ = 16,399
16,399
What is the quotient of 8,928 and 24
372
Find the product of 4802 and 127.
609,854
The answer to a division problem is called the:
Quotient
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