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Chapter 4 Review Part 1
Chapter 4 Review Part 1
Chapter 4 Review Part 1
Chapter 4 Review Part 1
Chapter 4 Review Part 1
Chapter 4 Review Part 1
Chapter 4 Review Part 1
Chapter 4 Review Part 1
Chapter 4 Review Part 1
Chapter 4 Review Part 1
Chapter 4 Review Part 1
Chapter 4 Review Part 1
Chapter 4 Review Part 1
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Chapter 4 Review Part 1

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Chapter 4 Review: Part 1. Factors and Exponents. October 21, 2008 Lecture Notes.

Chapter 4 Review: Part 1. Factors and Exponents. October 21, 2008 Lecture Notes.

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Transcript

  • 1. Warm Up: Rational Numbers and Scientific Notation
    • Evaluate: 3m – 11/n, for m=7, n=14
    • Evaluate: y(xy-7)/10, for x=6, y=2
    • Scientific Notation: 0.00209
    • Standard Notation: 8.43 x 10 6
  • 2. Chapter 4 Review: Part 1 By Ms. Dewey-Hoffman October 21 st , 2008 Lecture Notes
  • 3. 4.1: Divisibility and Factors
    • Knowing what is divisible by what helps you find factors.
    • A number is divisible by another number when it divides that number without a remainder.
    • One number is a factor of another number if it divides that number with no remainder.
  • 4. How do you determine if a number is divisible by…
    • 2: if the last digit is divisible by: 0, 2, 4, 6, and 8.
    • 5, if the last digit is divisible by: 0 or 5.
    • 10, if the last digit is divisible by: 0.
    • 3, if the sum of the digits is divisible by 3.
    • 9, if the sum of the digits is divisible by 9.
  • 5. List the Positive Factors:
    • 35
    • 32
    • 50
    • 75
    • 68
  • 6. 4.2: Exponents
  • 7. Exponents
    • There are two parts of an exponent.
    • The exponent and the base.
    • The exponent tells you how many time to multiply the base.
    • The base is also considered a factor.
    • Remember ORDER OF OPERATIONS!!!
    • Where do Exponents “factor” into Order of Operations?
  • 8. Solve:
    • 4(2y-3) 2 , for y = 5
    • (12-3) 2  (2 2 -1 2 )
    • 2m 2 + n, for m = -3, n = 4
  • 9. Prime Factorization and Greatest Common Factor (4.3)
    • Prime Numbers: are numbers that are divisible by only 1 and itself.
    • Composite Numbers: are numbers that are divisible by more than just 1 and itself.
    • Factor trees are what you should use to find Prime Factorization.
    • Finding the prime factors of a number are all of the prime numbers that when multiplied together give you the original number.
  • 10. Find the Prime Factors
    • 621
    • 253
    • 1,575
  • 11. Greatest Common Factor (GCF)
    • Any factors that are the same for two or more numbers are common factors.
    • The greatest of these common factors are called Greatest Common Factors.
    • To find these Greatest Common Factors, find ALL of the factors!
    • Figure out which ones are Common!
    • Circle them and pull them out.
    • Find the PRIME FACTORS to make sure you have ALL of the FACTORS!
  • 12. Find the GCFs for These:
    • 180a 2 and 210a
    • 6m 3 n and 8mn 2
    • 25b 2 c and 42bc
  • 13. Assignment #27
    • Warm Up: Page 216-217: 1-24 All.
    • AND!!!
    • Define or give an example for each of the bolded words in the three sections.
    • So get started =]

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