## Subtraction of Integers Exercises – Set 1

Below are exercises on subtraction of signed numbers. Part I and II are exercises for subtraction of integers, while part III is an extension to fractions and decimals. Solutions and answers can be found here.

Part I

1. 8 – (-7)

2. -4 – (-10)

3. -6 – 8

4. 0 – (-5)

5. -17 – (-13)

6. 0 – 18

7. 12 – 19

8. -11 – 18

9. 21 – (-22)

10. -14 -(-14)

Part II

1. 31 – (-14)

2. -17 – (-11)

3. -19 – 12

4. 0 – (-17)

5. -34 – (-21)

6. 0 – 47

7. 36 – 42

8. -25 – 35

9. 28 – (-30)

10. -45 – (-45)

Part III

1. $\frac {1}{7} - ( -\frac {3}{7})$

2. $- \frac {3}{5} - (- \frac {4}{5})$

3. $-\frac {3}{4} - \frac {1}{4}$

4. $\frac {7}{11} - \frac {9}{11}$

5. $- \frac {5}{12} - (- \frac {5}{12})$

6. 0.4 – (-0.3)

7. -0.8 – (-0.7)

8. -1.2 – 0.4

9. 0.3 – 0.9

10. -0.6 – (-0.6)

You might also want to practice multiplication of integers.

## PCSR Civil Service Exam Review Guide 6

PCSR 2017 CIVIL SERVICE EXAM REVIEW GUIDE 6

Updated: May 14, 2017

PART I: MATHEMATICS

A. Conversion of Decimals, Fractions, and Percents
A.1 Videos

PART II: ENGLISH
A. Vocabulary
Civil Service Exam Vocabulary Review Part 6

Tip: Try to memorize the words and use it in your own words.

B. Spelling

Civil Service Review Spelling Quiz 6

B. Grammar – Conditionals

Enjoy learning!

## PCSR Civil Service Exam Review Guide 5

After learning the operations on fractions in Review Guide 3 and Review Guide 4, let us turn our attentionto operations on decimals this week. In this tutorial, we are going to learn addition, subtraction, multiplication, and division. Here is your review guide from the week.

PART I: MATHEMATICS

A. Operations on Decimals

A.1 Videos

A.2 More videos

Lesson 1: How to Add Numbers with Decimals
Lesson 2: How to Subtract Numbers with Decimals
Lesson 3: How to Multiply Numbers with Decimals
Lesson 4: How to Divide Numbers with Decimals

A.3 Articles

Lesson 1: How to Add Numbers with Decimals
Lesson 2: How to Subtract Numbers with Decimals
Lesson 3: How to Multiply Numbers with Decimals
Lesson 4: How to Divide Numbers with Decimals

PART II: ENGLISH

A. Vocabulary

Civil Service Exam Vocabulary Review Part 5
Tip: Try to memorize the words and use it in your own words.

B. Grammar – The Perfect Progressive Tenses

Lesson 1: Present Perfect Progressive Tense
Lesson 2: Past Perfect Progressive
Lesson 3: Future Perfect Progressive

Enjoy!

## PCSR Civil Service Exam Review Guide 4

After learning how to subtract fractions, in this review guide we will be learning about multiplication and division of fractions. Watch the video below and read the articles.

PART I: MATHEMATICS

Videos

A. Multiplication of Fractions

B. Division of Fractions

More videos (Taglish videos from Youtube)

Articles

Multiplication of Fractions

Division of Fractions

PART II: ENGLISH

A. Vocabulary

Civil Service Exam Vocabulary Review Part 4
Tip: Try to memorize the words and use it in your own words.

B. Grammar – The Progressive Tenses

## PCSR Civil Service Exam Review Guide 3

PCSR 2017 CIVIL SERVICE EXAM REVIEW GUIDE 1
Updated: April 25, 2017

This is the PCSR Civil Service Exam Review Guide 3. In this guide, we have two main topics. In mathematics, we have subtraction of fractions and in English we have perfect tenses. Read the articles below, watch the videos, and then answer the given exercises. You should be able to finish reading the articles, watching the videos, and answering the exercises in one week.

PART I: MATHEMATICS

Subtraction of Fractions

Videos

More videos

Articles

PART II: ENGLISH

A. Vocabulary

Civil Service Exam Vocabulary Review Part 3
Tip: Try to memorize the words and use it in your own words.

B. Grammar

The Perfect Tenses

Part III: Clerical Operations

Rules in Alphabetizing Part 3

PART IV: GENERAL INFO, TIPS, AND TRICKS

Enjoy!

## PCSR Civil Service Exam Review Guide 2

PCSR 2017 CIVIL SERVICE EXAM REVIEW GUIDE 2
Updated: April 25, 2017

PART I: MATHEMATICS

Videos

More videos

Articles

PART II: ENGLISH

A. Vocabulary

Civil Service Exam Vocabulary Review Part 2
Tip: Try to memorize the words and use it in your own words.

B. Grammar

Simple Tenses
Lesson 1: The Simple Present Tense
Lesson 2: The Simple Past Tense
Lesson 3: The Simple Future Tense
Quiz: Simple Tenses Summary and Quiz

PART III: TIPS AND TRICKS

8 Tips on How to Pass the Civil Service Examination Next Time

Enjoy!

## PCSR Civil Service Exam Review Guide 1

PCSR 2017 CIVIL SERVICE EXAM REVIEW GUIDE 1
Updated: April 25, 2017

PART I: MATHEMATICS

A. GCD

Videos

Lesson 1: Understanding Common Divisors
Lesson 2: Common Divisors and Greatest Common Divisor
Lesson 3: Exercises on Getting the GCD
Lesson 4: Getting the GCD by Prime Factorization
Lesson 5: GCD and Reducing Fractions to Lowest Terms

Articles

B. LCM

Videos

Lesson 1: Least Common Multiple Part 1
Lesson 2: Least Common Multiple Part 2
Lesson 3: Least Common Multiple Part 3

Article

C. Proper, Improper, and Mixed Form

D. More on LCM and GCD

PART II: ENGLISH

A. Vocabulary

Tip: Try to memorize the words and use it in your own words.

B. Grammar

Lesson 1: Verb and Tenses: An Introduction
Lesson 2: The Subject-Verb Agreement Rules Part 1
Lesson 3: The Subject-Verb Agreement Rules Part 2
Lesson 4: Subject-Verb Agreement

C. Spelling

Civil Service Review Spelling Quiz 1

Part III: CLERICAL Operations (Subprofessional)

Alphabetizing Rules Part 1
PART IV: TIPS AND TRICKS

Enjoy!

## PCSR REVIEW SERIES WEEK 11: Work Problems

This is the 11th week in our review series. After learning about motion problems which discuss distance, rate and time, let’s now learn how to solve work problems. Below are the articles and videos that you can read and watch. Later, we will have practice problems.

ARTICLES

VIDEOS

Enjoy learning!

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