Addition of Integers Exercises Set 1 Answers

Below are the answers to Addition of Integers Exercises (Set 1).

1. 6
2. -17
3. -13
4. -4
5. 0
6. -25
7. 23
8. -26
9. 0
10. 34

Part II
1. 10
2. -6
3. 8
4. 0
5. -9
6. -3
7. -6
8. 11
9. 0
10. 11

Part III
1. -2/2 or -1
2. -1/4
3. 0
4. 1/4
5. -7/11
6. 0.4
7. 3.6
8. -1.5
9. 1.5
10. -1.45

You might also want to answer the exercises on subtraction of integers.

PCSR Civil Service Exam Review Guide 7

PCSR 2017 CIVIL SERVICE EXAM REVIEW GUIDE 7
Updated: May 20, 2017

PART I: MATHEMATICS

A. Addition of Integers
A.1 Videos

How to Add Integers Part 1
How to Add Integers Part 2
How to Add Integers Part 3

A.2 More video tutorials

How to Add Integers Using the Number Line Part 1
How to Add Integers Using the Number Line Part 2
Addition of Integers Using Chips

A.3 Articles

Part 1: How to Add Positive and Negative Integers
Part 2: Addition of Integers Practice Test
Part 3: Solution to Practice Test

PART II: ENGLISH

A. Vocabulary

Civil Service Exam Vocabulary Review Part 7
Tip: Try to memorize the words and use it in your own words.

B. Spelling

Civil Service Exam Spelling Quiz 7

C. Answering Paragraph Organizations Questions

How to Answer Paragraph Organization Tests Part 1
How to Answer Paragraph Organization Tests Part 2
How to Answer Paragraph Organization Tests Part 3

Enjoy!

Division of Integers Exercises – Set 1

Below are exercises on division of signed numbers. Part I and II are exercises for divison of integers, while part III is an extension to fractions and decimals.

Part I

1.  12 \div (-3)

2. -16 \div 4

3.  -14 \div (-2)

4. 15 \div (-3)

5. 0 \div (-5)

6. -18 \div (-1)

7. -25 \div 5

8. 6 \div (-3)

9. -8 \div (-4)

10. 12 \div 2

Part II

1.  -34 \div 17

2.  45 \div -9

3. -56 \div (-8)

4. -63 \div 9

5. 0 \div (-100)

6. -54 \div (-9)

7. 72 \div (-8)

8. -50 \div 10

9. -17 \div (-17)

10. 36 \div (-4)

Part III

1. \frac {1}{2} \div (- \frac {1}{4})

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

3. -\frac {3}{4} \div \frac {3}{8}

4. \frac {4}{5} \div (-\frac {1}{5})

5. -\frac {5}{7} \div \frac {1}{2}

6. 0.4 \div (-0.2)

7. -0.9 \div (-0.3)

8. -4.5 \div 0.9

9. -0.8 \div 0.2

10. 0 \div 0.7

Multiplication of Integers Exercises – Set 1

Below are exercises on multiplication of signed numbers. Part I and II are exercises for multiplication of integers, while part III is an extension to fractions and decimals. I have written the exercises using the \times notation as well as the parenthesis to familiarize you with both notations.

Solutions and answers can be found here.

Part I

1. 2 \times (-3)

2. -4 \times -7

3. -9 \times 3

4. 7 \times 7

5. -11 \times 3

6. (12)(-4)

7. (-6)(-3)

8. (9)(0)

9. (-5)(3)

10. (13)(3)

Part II

1. 2 \times 3 \times (-4)

2. -4 \times 8 \times 1

3. -4 \times (-3) \times 3

4. -6 \times 2 \times (-5)

5. -12 \times 13 \times 0

6. (-6)(-1)(2)

7. (-5)(8)(3)

8. (-7)(-1)(-3)

9. (11)(8)(-1)

10. (-2)(-1)(7)(3)

Part III

1. \frac {1}{2} \times (-\frac {1}{3})

2. -\frac {1}{5} \times (-\frac {5}{8})

3. -\frac {3}{4} \times \frac {1}{6}

4. \frac {2}{7} \times \frac {1}{4}

5. -\frac {6}{11} \times \frac {2}{3}

6. 0.5 \times (-3)

7. -0.2 \times (0.4)

8. -3 \times (-0.1)

9. -0.6 \times (-0.4)

10. -0.7 \times 0

You might also want to practice division of integers.

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.

Addition of Integers Exercises – Set 1

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

Part I

1. -7 + 13

2. (-8) + (-9)

3. 5 + (-18)

4. 34 + (-38)

5. (-34) + 34

6. 0 + (-25)

7. 5 + (18)

8. -14 + (-12)

9. 13 + (-13)

10. 16 + 18

Part II

1. 13 + 12 + (-15)

2. -18 + (-2) + 14

3. 14 + 8 + (-14)

4. 21 + 7 + (-28)

5. -23 + 0 + 14

6. -19 + 22 + (-6)

7. 32 + (-11) + (-27)

8. 12 + (-11) + 10

9. 11 + (-22) + 21 + (-10)

10. 16 + (-16) + 8 + 3

Part III

1. \frac {1}{2} + (- \frac {3}{2})

2. \frac {1}{4} + (- \frac {2}{4})

3. \frac {3}{7} + (-\frac {3}{7})

4. - \frac {1}{2} + \frac {3}{4}

5. -\frac {4}{11} + (-\frac {3}{11})

6. 0.7 + (-0.3)

7. 4.8 + (-1.2)

8. -3.7 + 2.2

9. 12.6 + (-11.1)

10. 13.75 + (-15.2)

You might also want to practice subtraction of integers.

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