P6 Math 7. Chapter 1 Quiz Sept 10 2015
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Questions and Answers
- 1.
Order the values from least to greatest. 1, |5|, 4, |-8|, -2
- A.
-2, 1, 4, |-8|, 5
- B.
|-8|, -2, 1, 4, |5|
- C.
-2, 1, 4, |5|, |-8|
- D.
1, |5|, 4 |-8|, -2
Correct Answer
C. -2, 1, 4, |5|, |-8|Explanation
The given answer correctly orders the values from least to greatest. The first number is -2, which is the smallest value. Then, the next number is 1, followed by 4. The fourth number is |5|, which is equal to 5, and finally, the largest value is |-8|, which is equal to 8.Rate this question:
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- 2.
The freezing point is the temperature at which a liquid becomes a solid. The freezing point of butter is 35 degrees and the freezing point of the mercury is -39 degrees. Which is closer to the freezing point of water at 0 degrees. (All temperatures are in Centigrade).
- A.
Butter
- B.
Mercury
Correct Answer
A. ButterExplanation
The freezing point of water is 0 degrees Celsius. Since the freezing point of butter is 35 degrees Celsius, it is closer to the freezing point of water compared to mercury, which has a freezing point of -39 degrees Celsius.Rate this question:
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- 3.
True or False. |-3| < 3
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The absolute value of -3 is equal to 3, which is not less than 3. Therefore, the statement |-3| < 3 is false.Rate this question:
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- 4.
A scuba diver dives down 20 feet in the ocean. Then she swims 11 feet back up towards the surface of the water. How many feet deep from the surface of water is the final position of the diver?
- A.
20 - - 11
- B.
-20 + 11
- C.
11 + 20
- D.
11 - - 20
Correct Answer
B. -20 + 11 -
- 5.
Temperatures in the Gobi Desert reach -40 degrees(F) in the winter and 90 degrees (F) in the summer. Find the range of the temperatures. In this case, find the expression that results in correct range value as a positive number.
- A.
-40 - 90
- B.
90 - (-40)
- C.
-40 + 90
- D.
-40 - (-90)
Correct Answer
B. 90 - (-40)Explanation
The correct answer is 90 - (-40). This expression calculates the range of temperatures by subtracting the lowest temperature (-40) from the highest temperature (90), resulting in a positive number.Rate this question:
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- 6.
Evaluate the expression 4 - a - c when a = -2 c = 5
- A.
-3
- B.
11
- C.
1
- D.
-1
Correct Answer
C. 1Explanation
The expression 4 - a - c can be simplified by substituting the given values of a and c. So, 4 - (-2) - 5 becomes 4 + 2 - 5 which equals 1. Therefore, the correct answer is 1.Rate this question:
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- 7.
True / False: Absolute Value is the distance between a number and 0 (zero) on the number line.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The statement is true because the absolute value of a number is the distance between that number and zero on the number line. It is always a positive value, regardless of whether the original number is positive or negative. For example, the absolute value of -5 is 5, as the distance between -5 and 0 is 5 units. Similarly, the absolute value of 5 is also 5, as the distance between 5 and 0 is also 5 units.Rate this question:
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- 8.
-12 - (-27) is less than zero.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The expression -12 - (-27) is equivalent to -12 + 27, which equals 15. Since 15 is greater than zero, the statement " -12 - (-27) is less than zero" is false.Rate this question:
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- 9.
Evaluate the expression (simplify). -6 + (-11) - 2
- A.
19
- B.
3
- C.
7
- D.
-19
Correct Answer
D. -19Explanation
The given expression is -6 + (-11) - 2. To simplify this expression, we can start by adding the two negative numbers -6 and -11, which gives us -17. Then we subtract 2 from -17, resulting in -19. Therefore, the correct answer is -19.Rate this question:
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- 10.
Evaluate the expression. -5 - (-5)
- A.
0
- B.
-10
- C.
10
- D.
None of the above
Correct Answer
A. 0Explanation
The expression -5 - (-5) can be simplified by applying the rule of subtracting a negative number, which is equivalent to adding the positive number. Therefore, -5 - (-5) becomes -5 + 5, which equals 0.Rate this question:
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Jun 29, 2023Quiz Edited by
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Sep 10, 2015Quiz Created by
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