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

Answers

1. 6
2. 7
3. 4
4. 5
5. 1
6. 12
7. 6
8. 12
9. 4
10. 6

Solutions to numbers 1-2
Solutions to numbers 3-5
Solutions to numbers 6-7
Solutions to numbers 8-10

2018 PCSR Civil Service Review Guide 17

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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http://civilservicereview.com
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https://www.youtube.com/user/sipnayanph
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http://sipnayan.com
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2018 PCSR Civil Service Review Guide 18

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
Like our Facebook Pages and be updated:
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2018 PCSR Civil Service Review Guide 19

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/
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2018 PCSR Civil Service Review Guide 16

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

B. Analogy Exercise

PART III: PRACTICE TESTS

PEMDAS Exercise

Solving Equations

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 15

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

2018 PCSR Civil Service Review Guide 13

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

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/



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