VOCABULARY Whole numbers that are multiplied to find

VOCABULARY -Whole numbers that are multiplied to find a product are called factors of that product. A number is divisible by its factors. -Factors shared by two or more whole numbers are called common factors. The largest of the common factors is called the greatest common factor, or GCF. -The smallest number that is a multiple of two or more numbers is the least common multiple (LCM).

I DO (foldable) 1) What is the greatest common factor (GCF)of 15 and 20? o o List the factors of 15 and 20 • 15: 1, 3, 5, 15 • 20: 1, 2, 4, 5, 10, 20 The GCF is 5 2) What is the least common multiple (LCM) of 7 and 12? o o List the multiples of 7 and 12 • 7: 7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84 • 12: 12, 24, 36, 48, 60, 72, 84 The LCM is 84

WE DO (notes)

I CAN STATEMENT • I can find the greatest common factor of two whole numbers 100 or less. • I can find the least common multiple of two whole numbers 12 or less.

YOU DO (classwork) o. ADV Practice pg. 11 # 1, 2, 5, 6, 9, 17, 19, 21, 22, 26 o. REG Practice pg. 11 #1 -2, 5, 6, 17, 19, 21, 22 Greatest common factor explained https: //www. khanacademy. org/video/greatest-common-divisor Least common multiple https: //www. khanacademy. org/video/least-commonmultiple-exercise GCF & LCM word problems https: //www. khanacademy. org/video/lcm-and-gcfgreatest-common-factor-word-problems