## GCD Practice Exercises with Solutions on Youtube

Find the GCD/GCF of the following numbers.

1. 12, 18

2. 14, 35

3. 20,28

4. 25, 30, 40

5. 7, 12

6. 48, 72

7. 42, 60, 72

8. 24, 36

9. 12, 16

10. 18, 30, 54

PH Civil Service Exam Reviewer

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Find the GCD/GCF of the following numbers.

1. 12, 18

2. 14, 35

3. 20,28

4. 25, 30, 40

5. 7, 12

6. 48, 72

7. 42, 60, 72

8. 24, 36

9. 12, 16

10. 18, 30, 54

2018 PCSR Civil Service Review Guide 17

Week 17: January 22 – 28, 2018

PART I: MATH

A. RATE BASE AND PERCENTAGE

Part 1 Introducing Rate, Base, and Percentage

Part 2 Calculating for Percentage

Part 3 Calculating for the Rate

Part 4 Calculating for the Base

Part 5 Calculating Rate, Base, and Percentage

Part 6 Calculating Discounts and Interests

B. DISCOUNT

Part 1 Discount Sample Problem 1

Part 2 Discount Sample Problem 2

Part 3 Discount Sample Problem 3

Part 4 Discount Sample Problem 4

Part 5 Discount Sample Problem 5

Part 6 Discount Problems and Rate, Base, and Percentage

C. INTEREST

Part 1 Introduction to Problems about Simple Interest

Part 2 Formula for Simple Interest

Part 3 Interest and Investment Problems

Part 4 Interest Problems: Finding the Principal

Part 5 Interest Problems: Finding the Rate

Part 6 Interest Problems: Finding the Time

Part II: ENGLISH

A. Vocabulary

Part III: CLERICAL

A. Spelling Quiz 17

PART IV: OTHERS

Sa mga gustong humabol, nandito ang links ng Weeks 1-16

http://civilservicereview.com/pcsr-review-guide/

MORE REVIEWERS

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2018 PCSR Civil Service Review Guide 18

Week 18: January 29 – February 4, 2018

PART I: MATH

A. RATIO AND PROPORTION

Lesson 1: Ratio and Proportion Definition and Representation

Ratio Sample Problem 1

Ratio Sample Problem 2

Ratio Sample Problem 3

Lesson 2: Proportion, Equivalent Fractions, Cross Multiplication

Ratio and Proportion Sample Problem 1

Ratio and Proportion Sample Problem 2

Ratio and Proportion Sample Problem 3

Ratio and Proportion Sample Problem 4

Part II: PRACTICE TESTS

ENGLISH

Grammar Quiz on Conjunctions

Grammar Quiz – There, Their, They’re

Grammar Quiz – A, An, The

MATH

Quiz on Converting Percent to Decimals

Quiz on Converting Percent to Fraction

Quiz on Converting Fraction to Percent

PART III: OTHERS

Sa mga gustong humabol, nandito ang links ng Weeks 1-16

http://civilservicereview.com/pcsr-review-guide/

MORE REVIEWERS

1. Math English Tutorials and more at the PCSR Civil Service Review website:

http://civilservicereview.com

2. More than 700 Taglish Math Tutorials at the Sipnayan Youtube channel:

https://www.youtube.com/user/sipnayanph

3. Sipnayan Website

http://sipnayan.com

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2018 PCSR Civil Service Review Guide 19

Week 19: February 5 – February 11, 2018

PART I: MATH

A. AREA

Lesson 1: Area of Rectangles – Concept and Formula

Lesson 2: Area of Rectangles – Sample Problems

Lesson 3: Area of a Square – Concept and Formula

Lesson 4: Area of a Square – Sample Problems

Lesson 5: Area of a Parallelogram – Concept and Formula

Lesson 6: Area of a Parallelogram – Sample Problems

Lesson 7: Area of a Triangle – Concept and Formula

Lesson 8: Area of a Triangle – Sample Problems

Lesson 9: Area of a Trapezoid – Concept and Formula

Lesson 10: Area of a Trapezoid – Concept and Formula

Lesson 11: Area of a Circle – Concept and Formula

Lesson 12: Area of a Circle – Sample Problems

Part II: PRACTICE TESTS

ENGLISH

Grammar Quiz – Is, It, Its, It’s

Grammar Quiz – Past, Present, Future Tenses

Possessive Adjectives and Possessive Pronouns Quiz

MATH

Addition of Integers Exercises

Subtraction of Integers Exercises

Multiplication of Integers

Division of Integers

PART III: OTHERS

Sa mga gustong humabol, nandito ang links ng Weeks 1-16

http://civilservicereview.com/pcsr-review-guide/

MORE REVIEWERS

1. Math English Tutorials and more at the PCSR Civil Service Review website:

http://civilservicereview.com

2. More than 700 Taglish Math Tutorials at the Sipnayan Youtube channel:

https://www.youtube.com/user/sipnayanph

3. Sipnayan Website

http://sipnayan.com

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PCSR Facebook Page: https://web.facebook.com/phcivilservicereviewer/

Sipnayan Facebook Page: https://web.facebook.com/sipnayanph/

2018 PCSR Civil Service Review Guide 16

Week 16: January 15 – 21, 2018

PART I: MATHEMATICS

A. WORK PROBLEM

Youtube Tutorial Videos (Taglish)

Lesson 1: How to Solve Work Problems Part 1

Lesson 2: How to Solve Work Problems Part 2

Lesson 3: How to Solve Work Problems Part 3

Lesson 4: How to Solve Work Problems Part 4

Lesson 5: How to Solve Work Problems Part 5

B. Articles

Article 1: How to Solve Work Problems Part 1

Article 2: How to Solve Work Problems Part 2

Article 3: How to Solve Work Problems Part 3

PART II: ENGLISH

A. Vocabulary

PART III: PRACTICE TESTS

PART IV: OTHERS

4 Things to do 3 Months Before the Exam

MORE REVIEWERS

1. Math English Tutorials and more at the PCSR Civil Service Review website:

2. More than 700 Taglish Math Tutorials at the Sipnayan Youtube channel:

https://www.youtube.com/user/sipnayanph

3. Sipnayan Website

Like our Facebook Pages and be updated:

PCSR Facebook Page: https://web.facebook.com/phcivilservicereviewer/

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2018 PCSR Civil Service Review Guide 15

Week 15: January 8 – 14, 2018

PART I: MATHEMATICS

A. MOTION PROBLEM

Youtube Tutorial Videos (Taglish)

Lesson 1: Introduction to Motion Problems

Lesson 2: How to Solve Motion Problems Part 1

Lesson 3: How to Solve Motion Problems Part 2

Lesson 4: How to Solve Motion Problems Part 3

Lesson 5: How to Solve Motion Problems Part 4

Lesson 6: How to Solve Motion Problems Part 5

B. Articles

Article 1: Introduction to Motion Problems

Article 2: How to Solve Motion Problems Part 1

Article 3: How to Solve Motion Problems Part 2

Article 4: How to Solve Motion Problems Part 3

Article 5: How to Solve Motion Problems Part 4

PART II: ENGLISH

A. Grammar and Correct Usage Practice Test

B. Vocabulary

Part III: CLERICAL (Sub-Professional)

A. Spelling

PART IV: OTHERS

4 Things to do 3 Months Before the Exam

MORE REVIEWERS

1. Math English Tutorials and more at the PCSR Civil Service Review website:

http://civilservicereview.com

2. More than 700 Taglish Math Tutorials at the Sipnayan Youtube channel:

https://www.youtube.com/user/sipnayanph

3. Sipnayan Website

http://sipnayan.com

Like our Facebook Pages and be updated:

PCSR Facebook Page: https://web.facebook.com/phcivilservicereviewer/

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2018 PCSR Civil Service Review Guide 13

Week 13: December 18 – December 24, 2017

PART I: MATHEMATICS

A. NUMBER PROBLEM

Youtube Tutorial Videos (Taglish)

— Series 1 —

How to Solve Number Problems Mentally 1

How to Solve Number Problems Mentally 2

How to Solve Number Problems Mentally 3

— Series 2 —

How to Solve Word Number Problems Part 1

How to Solve Word Number Problems Part 2

How to Solve Word Number Problems Part 3

B. Articles

The Solving Number Word Problems Series

How to Solve Number Word Problems Mentally

How to Solve Number Word Problems Part 1

How to Solve Number Word Problems Part 2

How to Solve Number Word Problems Part 3

How to Solve Number Word Problems Part 4

PART II: ENGLISH

A. The Word Analogy Tutorial Series

How to Answer Word Analogy Questions Part 1

How to Answer Word Analogy Questions Part 2

How to Answer Word Analogy Questions Part 3

501 Word Analogy Practice Questions with Answers (Downloadable – PDF)

B. Vocabulary

Part III: CLERICAL (Sub-Professional)

A. Spelling

MORE REVIEWERS

1. Math English Tutorials and more at the PCSR Civil Service Review website:

http://civilservicereview.com

2. More than 700 Taglish Math Tutorials at the Sipnayan Youtube channel:

https://www.youtube.com/user/sipnayanph

3. Sipnayan Website

http://sipnayan.com

Like our Facebook Pages and be updated:

PCSR Facebook Page: https://web.facebook.com/phcivilservicereviewer/

Sipnayan Facebook Page: https://web.facebook.com/sipnayanph/

2018 PCSR Civil Service Review Guide 12

Week 12: December 11 – December 17, 2017

PART I: MATHEMATICS

A. EQUATIONS

Youtube Tutorial Videos (Taglish)

Lesson 1: Introduction to Equations

Lesson 2: Solutions to Equations

Lesson 3: Properties of Equality

Lesson 4: Solving Equations Part 1

Lesson 5: Solving Equations Part 2

Lesson 6: Solving Equations Part 3

Lesson 7: Solving Equations Part 4

How to Solve Equations Part 1

How to Solve Equations Part 2

How to Solve Equations Part 3

B. Articles

A Tutorial on Solving Equations Part 1

A Tutorial on Solving Equations Part 2

A Tutorial on Solving Equations Part 3

PART II: ENGLISH

A. How to Answer Paragraph Organization Test

How to Answer Paragraph Organization Test Part 2

How to Answer Paragraph Organization Test Part 3

Strategies in Answering Paragraph Organization Tests

B. Vocabulary

Part III: CLERICAL (Sub-Professional)

A. Spelling

MORE REVIEWERS

1. Math English Tutorials and more at the PCSR Civil Service Review website:

http://civilservicereview.com

2. More than 700 Taglish Math Tutorials at the Sipnayan Youtube channel:

https://www.youtube.com/user/sipnayanph

3. Sipnayan Website

http://sipnayan.com

Like our Facebook Pages and be updated:

PCSR Facebook Page: https://web.facebook.com/phcivilservicereviewer/

Sipnayan Facebook Page: https://web.facebook.com/sipnayanph/