Tes Operasi Bilangan Bulat

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| By Johndaryono
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Johndaryono
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Quizzes Created: 1 | Total Attempts: 1,398
Questions: 10 | Attempts: 1,401

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Tes Operasi Bilangan Bulat - Quiz

Questions and Answers
  • 1. 

      3 - 9 =

    • A.

      12

    • B.

      6

    • C.

      -12

    • D.

      -6

    • E.

      0

    Correct Answer
    D. -6
    Explanation
    The correct answer is -6 because when you subtract 9 from 3, you are essentially moving 9 units to the left on the number line. Starting at 3 and moving 9 units to the left will bring you to -6.

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  • 2. 

    -21  +  (-28)

    • A.

      -7

    • B.

      -49

    • C.

      7

    • D.

      49

    • E.

      Salah semua

    Correct Answer
    B. -49
    Explanation
    The given expression is -21 + (-28). When adding two negative numbers, we add their absolute values and keep the negative sign. Therefore, the absolute values of -21 and -28 are 21 and 28 respectively. Adding them gives us 49. Since both numbers are negative, the result is -49.

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  • 3. 

    13 + (-9) + 7

    • A.

      11

    • B.

      4

    • C.

      -11

    • D.

      -4

    • E.

      3

    Correct Answer
    A. 11
    Explanation
    The correct answer is 11 because when you add 13 and -9, you get 4. Then, when you add 4 and 7, you get 11.

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  • 4. 

    -15 + 13 + (-4)

    • A.

      -2

    • B.

      -6

    • C.

      -24

    • D.

      4

    • E.

      5

    Correct Answer
    B. -6
    Explanation
    The given expression involves adding three numbers: -15, 13, and -4. When we add -15 and 13, we get -2. Then, when we add -2 and -4, we get -6. Therefore, the correct answer is -6.

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  • 5. 

    -35   -  18

    • A.

      17

    • B.

      -7

    • C.

      -17

    • D.

      -53

    • E.

      -63

    Correct Answer
    D. -53
    Explanation
    The correct answer is -53. To arrive at this answer, we subtract 18 from -35, which gives us -53.

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  • 6. 

    18    -  (-13)

    • A.

      5

    • B.

      -5

    • C.

      -31

    • D.

      31

    • E.

      Salah semua

    Correct Answer
    D. 31
    Explanation
    The correct answer is 31 because when you subtract a negative number from a positive number, you add the two numbers together. In this case, 18 minus (-13) is the same as 18 plus 13, which equals 31.

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  • 7. 

    -45   -  (-28)

    • A.

      17

    • B.

      -73

    • C.

      -17

    • D.

      73

    • E.

      72

    Correct Answer
    C. -17
    Explanation
    The correct answer is -17. This can be determined by subtracting -28 from -45, which gives us -17.

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  • 8. 

    -12 - 13 - (-4)

    • A.

      -29

    • B.

      3

    • C.

      -21

    • D.

      -5

    • E.

      5

    Correct Answer
    C. -21
    Explanation
    The correct answer is -21. This is because when subtracting a negative number from another negative number, it is equivalent to adding the positive value of that number. Therefore, -12 - 13 + 4 equals -21.

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  • 9. 

    .Suhu udara di dalam lemari es             -10o C,setelah listrik mati sebentar suhu menjadi 1o C,Berapa derajat perubahan suhu terjadi ?

    • A.

      9 derajat

    • B.

      -9 derajat

    • C.

      11 derajat

    • D.

      -11 derajat

    • E.

      0 derajat

    Correct Answer
    C. 11 derajat
    Explanation
    The temperature inside the refrigerator was initially at -10o C. After a short power outage, the temperature increased to 1o C. Therefore, the temperature change is calculated by subtracting the initial temperature from the final temperature, which is 1o C - (-10o C) = 11o C. Hence, the correct answer is 11 derajat.

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  • 10. 

    Suhu di puncak gunung -6o C, karena terjadi hujan salju,suhunya turun lagi 8o C, berapakah suhu udara di puncak gunung tersebut setelah turun hujan ?

    • A.

      2 derajat celcius

    • B.

      -2 derajat celcius

    • C.

      14 derajat celcius

    • D.

      -14 derajat celcius

    • E.

      -6 derajat celcius

    Correct Answer
    D. -14 derajat celcius
    Explanation
    After the snowfall, the temperature on the mountain peak decreases by 8 degrees Celsius. Since the initial temperature was -6 degrees Celsius, subtracting 8 degrees Celsius from it gives us -14 degrees Celsius. Therefore, the air temperature on the mountain peak after the rain is -14 degrees Celsius.

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