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Division of Integers Exercises Set 1 Answers

Below are the answers to Division of Integers Exercises (Set 1).
Part I

1. -4

2. -4

3. 7

4. -5

5. 0

6. 18

7. -5

8. -2

9. 2

10. 6

Part II

1. -2

2. -5

3. 7

4. -7

5. 0

6. 6

7. -9

8. -5

9. 1

10. -9

Part III

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

2. -\frac {2}{5} \div (-\frac {3}{4}) =  -\frac {2}{5} \times (-\frac {4}{3}) =  \frac {8}{15}

3. -\frac {3}{4} \div \frac {3}{8} =  -\frac {3}{4} \times \frac {8}{3} = (-\frac {24}{12}) =  -2

4. \frac {4}{5} \div (-\frac {1}{5}) = \frac {4}{5} \times (-\frac {5}{1}) = -\frac {20}{5} = -4

5. -\frac {5}{7} \div \frac {1}{2} = -\frac {5}{7} \times \frac {2}{1} = -\frac {10}{7} = -1 \frac {3}{7}

6. -2

7. 3

8. -5

9. -4

10. 0

Now, that you have compelted the four fundamental operations, you might want to learn about the PEMDAS Rules and answer PEMDAS exercises.

Subtraction of Integers Exercises Set 1 Answers

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

Part I

1.) 8 – (-7) = 8 + (7) = 15

2.) -4 – (-10) = -4 + (10) = 6

3. -6 – 8 = -6 + (-8) = -14

4. 0 – (-5) = 0 + (5) = 5

5. -17 – (-13) = -17 + (13) = -4

6. 0 – 18 = 0 + (-18) =-18

7. 12 – 19 = 12 + (-19) = -7

8. -11 – 18 = -11 + (-18) = -29

9. 21 – (-22) = 21 + (22) = 43

10. -14 – (-14) = -14 + (14) = 0

Part II

1. 31 – (-14) = 31 + (14) = 45

2. -17 – (-11) = -17 + (11) =-6

3. -19 – 12 = -19 + (-12) = -31

4. 0 – (-17) = 0 + (17) = 17

5. -34 – (-21) = -34 + (21) = -13

6. 0 + (-47) = -47

7. 36 – 42 = 36 + (-42) = -6

8. -25 – 35 = -25 + (-35) = -60

9. 28 – (-30) = 28 + (30) = 58

10. -45 – (-45) = -45 + (45) = 0

Part III

1. \frac {1}{7} - (-\frac {3}{7}) = \frac {1}{7} + (\frac {3}{7}) = \frac {4}{7}

2. -\frac {3}{5} - (-\frac {4}{5}) = -\frac {3}{5} + (\frac {4}{5})= \frac {1}{5}

3. -\frac {3}{4} - \frac {1}{4} = -\frac {3}{4} +(-\frac {1}{4}) = -\frac {4}{4} = -1

4. \frac {7}{11} - \frac {9}{11} = \frac {7}{11} + (-\frac {9}{11}) = -\frac {2}{11}

5. -\frac {5}{12} - (-\frac {5}{12}) = -\frac {5}{12} + (\frac {5}{12}) = 0

6. 0.4 – (-0.3) = 0.4 + (0.3) = 0.7

7. -0.8 – (-0.7) = -0.8 + (0.7) = -0.1

8. -1.2 – 0.4 = -1.2 + (-0.4) = -1.6

9. 0.3 – 0.9 = 0.3 + (-0.9) = -0.6

10. -0.6 – (-0.6) = -0.6 + (0.6) = 0

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.