Tes Operasi Bilangan Bulat
- 1.
3 - 9 =
- A.
12
- B.
6
- C.
-12
- D.
-6
- E.
0
Correct Answer
D. -6Explanation
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.Rate this question:
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- 2.
-21 + (-28)
- A.
-7
- B.
-49
- C.
7
- D.
49
- E.
Salah semua
Correct Answer
B. -49Explanation
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.Rate this question:
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- 3.
13 + (-9) + 7
- A.
11
- B.
4
- C.
-11
- D.
-4
- E.
3
Correct Answer
A. 11Explanation
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.Rate this question:
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- 4.
-15 + 13 + (-4)
- A.
-2
- B.
-6
- C.
-24
- D.
4
- E.
5
Correct Answer
B. -6Explanation
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.Rate this question:
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- 5.
-35 - 18
- A.
17
- B.
-7
- C.
-17
- D.
-53
- E.
-63
Correct Answer
D. -53Explanation
The correct answer is -53. To arrive at this answer, we subtract 18 from -35, which gives us -53.Rate this question:
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- 6.
18 - (-13)
- A.
5
- B.
-5
- C.
-31
- D.
31
- E.
Salah semua
Correct Answer
D. 31Explanation
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.Rate this question:
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- 7.
-45 - (-28)
- A.
17
- B.
-73
- C.
-17
- D.
73
- E.
72
Correct Answer
C. -17Explanation
The correct answer is -17. This can be determined by subtracting -28 from -45, which gives us -17.Rate this question:
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- 8.
-12 - 13 - (-4)
- A.
-29
- B.
3
- C.
-21
- D.
-5
- E.
5
Correct Answer
C. -21Explanation
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.Rate this question:
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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 derajatExplanation
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.Rate this question:
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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 celciusExplanation
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.Rate this question:
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Mar 20, 2023Quiz Edited by
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Aug 12, 2010Quiz Created by
Johndaryono