Download presentation

Presentation is loading. Please wait.

1
**1.2 Fractions 1. Write equivalent fractions.**

2. Write equivalent fractions with the LCD. 3. Write the prime factorization of a number. 4. Simplify a fraction to lowest terms. Copyright © 2011 Pearson Education, Inc.

2
Fractions Numerator Denominator Part Whole

3
Equivalent Fractions ∙ 2 ∙ 2 ∙ 3 ∙ 3 ÷ 3 ∙ 2 ÷ 3 ∙ 2

4
Factors: Expressions that are being multiplied. Prime number: A natural number that has only 1 and the number itself as factors. 2, 3, 5, 7, 11, 13, 17, 19, 23,… Prime factorization: A factorization that contains only prime factors. 1, 2, 3, 4, 6 and 12 are factors of 12. Prime factorization of 12 is 2 ∙ 2 ∙ 3.

5
**Find the prime factorization of 20.**

Factor Tree Factor Tower Divide by prime numbers! 2, 3, 5, 7, 11, …

6
0, 2, 4, 6, 8 259: = 16 372: = 12 5, 10, 15, 20, … 10, 20, 30, 40, …

7
**Find the prime factorization of 60.**

Factor Tree Factor Tower

8
**Find the prime factorization of 48.**

Factor Tree Factor Tower

9
Find the LCD. Using Multiples 6: 6, 12, 18, 24, 30, 36, 42, 48, 54, 60 10: 10, 20, 30, 40, 50, 60 LCD = 30 Use when numbers are small.

10
**Using Prime Factorization**

Find the LCD. Using Prime Factorization 2∙3 2∙5 2 ∙ 3 ∙ 5 = 30 LCD:

11
Find the LCD. Using Multiples 12: 12, 24, 36, 48, 60 9: 9, 18, 27, 36 LCD = 36

12
**Using Prime Factorization**

Find the LCD. Using Prime Factorization 2∙2∙3 3∙3 LCD: 2∙2∙3 ∙ 3 = 36

13
**Write the fractions as equivalent fractions with the LCD.**

24 ∙3 ∙2

14
**Write the fractions as equivalent fractions with the LCD.**

Suggestion: 2∙2∙2∙2 2∙2∙3∙3 LCD: 2∙2∙2∙2∙3∙3 = 144 ∙9 ∙4

15
**Reduce Fractions. GCF: 3 Using Prime Factorization**

Using Greatest Common Factor GCF: 3 3 4

16
**Reduce Fractions. GCF: 6 Using Greatest Common Factor 5 7**

Using Prime Factorization

17
**Reduce Fractions. GCF: ? Common Factor: 10 Common Factor: 2**

Using Greatest Common Factor Common Factor: 10 Common Factor: 2 11 119 Using Prime Factorization

18
**Answer 3 out of 14 employees have optional eye insurance.**

At a company, 225 of the 1050 employees have optional eye insurance coverage as part of their benefits package. What fraction of the employees have optional eye insurance coverage? ÷ 5 ÷ 5 ÷ 3 Answer 3 out of 14 employees have optional eye insurance.

Similar presentations

OK

EXAMPLE 1 Writing Equivalent Fractions. EXAMPLE 1 Writing Equivalent Fractions Write two fractions that are equivalent to. Writing Equivalent Fractions.

EXAMPLE 1 Writing Equivalent Fractions. EXAMPLE 1 Writing Equivalent Fractions Write two fractions that are equivalent to. Writing Equivalent Fractions.

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on telling time in spanish Ppt on software project management by walker royce Ppt on supply chain management Ppt on poultry farm management Ppt on animal farm themes Ppt on airbag working principle of ups Ppt on online travel agency Ppt on condition based maintenance vibration Ppt on articles of association texas Ppt on regional transport office bangalore