Problem of the Day How many times was the world’s most-petted dog petted? Clue: Over a period of 8 years, Josh the Wonder Dog was petted by an average of 59,850 people per year. Answer: 59850 x 8 = 478,800 times

Any Questions about the homework? Lesson 2-1 pp.70-71 #s 12-21, 24-29 all Lesson 2-2a Activity Lab p. 73 #s 2-6 evens Grade 6 Mathematics

Chapter 2: Exponents, Factors and Fractions 2-2: Prime Factorization Grade 6 Mathematics

Definitions & other details What is the difference between prime and composite numbers? A prime number has exactly two factors, 1 and itself 2 x 1 = 2 7 x 1 = 7 A composite number can be written as a product of two or more prime numbers. (prime factorization) 60 = 2 • 2 • 3 • 5 = 22 • 3 • 5 1 is neither prime nor composite.

Definitions & other details Co-prime numbers: numbers that have no other factor common other than 1 Factor: is a whole number that divides another whole number with a remainder of zero Greatest Common Factor (GCF): GCF of 2 or more numbers is the greatest number that is a factor of all the numbers Multiple: Multiple of a number is the product of that number and any non-zero whole number Least Common Multiple (LCM): least common multiple of two or more numbers is the least multiple that is common to all numbers

The Slide Method Use this to find the GCF, LCM, and the fraction in lowest terms. See handout “The Slide Method for GCF and LCM” for instructions.

Homework Complete the Slide Method handout Chapter 1 Test on Monday (excluding 1-1, 1-5, and 1-10)