Chapter 1 Lesson 3

Chapter 1 Lesson 3 Equivalent Fractions Pages 18-19 1-9 odd Created By: Cindy Smith, OMSD

3 Column Notes – Chap. 1 Lesson 3 Main Ideas/Cues: fraction numerator denominator Details: A number of the form where both a and b are integers and b ≠ 0. The number a in the fraction The number b in the fraction where b ≠ 0. Picture/Example: and are fractions. The numerator of is 7. The denominator of is 13.

3 Column Notes – Chap. 1 Lesson 3 Main Ideas/Cues: Equivalent fractions Simplest form Details: Fractions that represent the same part-to-whole relationship. Equivalent fractions have the same simplest form. A fraction is in simplest form if its numerator and denominator have a greatest common factor of 1. Picture/Example: and are equivalent fractions that both represent The simplest form of the fraction is

Problem #1 – Column 1 First Step: Write the Problem 1. Write two equivalent fractions that represent the fraction of eggs that are cracked.

Problem #1 – Column 2 Second Step: Write the Problem 1. 2 out of 12 eggs are cracked.

Problem #1 – Column 2 Third Step: Rewrite as a fraction 1. 2 out of 12 eggs are cracked. 2 12

Problem #2

Problem #2 Final Step: List all the factors of the number, from least to greatest. 2. 32 = 1 x 32 = 2 x 16 = 4 x 8 1, 2, 4, 8, 16, and 32

Problem #4 Directions: Write all the factors of the number First Step: Write the Problem 4. 23

Problem #4 Second Step: Write all the factors of the number. 4. 23 = 1 x 23

Problem #4 Final Step: List all the factors of the number, from least to greatest. 4. 23 = 1 x 23 1 and 23

Problem #6 Directions: Tell whether the number is prime or composite First Step: Write the Problem 6. 81

Problem #6 Second Step: Write all the factors of the number. 6. 81 = 1 x 81 = 3 x 27 = 9 x 9

Problem #6 Final Step: Tell whether the number is prime or composite. 6. 81 = 1 x 81 = 3 x 27 = 9 x 9 Composite

Problem #8 Directions: Tell whether the number is prime or composite First Step: Write the Problem 8. 79

Problem #8 Second Step: Write all the factors of the number. 8. 79 = 1 x 79

Problem #8 Final Step: Tell whether the number is prime or composite. 8. 79 = 1 x 79 Prime

Problem #10 Directions: Use a factor tree to write the prime factorization of the number. First Step: Write the Problem 10. 48

Problem #10 Second Step: Create the factor tree 10. 48 2 x 24 2 x 12 2 x 6 2 x 3

Problem #10 Final Step: Write the prime factorization (remember to use exponents) 10. 48 = 2 x 2 x 2 x 2 x 3 = 24 x 3

Problem #12 Directions: Use a factor tree to write the prime factorization of the number. First Step: Write the Problem 12. 75

Problem #12 Second Step: Create the factor tree 10. 75 3 x 25 5 x 5

Problem #12 Final Step: Write the prime factorization (remember to use exponents) 12. 75 = 3 x 5 x 5 = 3 x 52

Chapter 1 Lesson 3