Question 1

The temperature in Vincennes was -13° at 8:00 A.M. At noon the thermometer read 2°. If Memphis had a temperature variation of twice that of Vincennes, by how many degrees did the temperature change in Memphis?

Accepted Answer

The answer of The temperature in Vincennes was -13° at...

Question 2

Subtract: -6 - 6
A)-6
B)12
C)0
D)-12

Accepted Answer

Subtracting 6 from -6 gives -12.

Question 3

Evaluate: 4 - 7 - 2 + 11 - 8 + 4
A)0
B)2
C)8
D)-2

Accepted Answer

Following the order of operations (which in this case is simply left to right since there are only addition and subtraction operations), the calculation goes as follows: 4 - 7 = -3, -3 - 2 = -5, -5 + 11 = 6, 6 - 8 = -2, -2 + 4 = 2. Therefore, the correct answer is 2.

Question 4

Subtract: -5 - (-5) 
A)0
B)-0
C)-10
D)10

Accepted Answer

When subtracting a negative number, it is the same as adding its opposite. So -5 - (-5) is the same as -5 + 5, which equals 0.

Question 5

Evaluate the following: 0 - 9

Accepted Answer

The answer of Evaluate the following: 0 - 9...

Question 6

Perform the indicated operation: 0 - (-3)
A)-3
B)0
C)3
D)none of the above

Accepted Answer

When subtracting a negative number, we add its opposite. Thus, 0 - (-3) becomes 0 + 3, which equals 3. Therefore, the answer is choice C.

Question 7

Death Valley is 282 feet below sea level. Mt. Shasta is 14,162 feet above sea level. How far apart in elevation is Death Valley from the summit of Mt. Shasta?
A)14,444 feet
B)-13,880 feet
C)-14,444 feet
D)13,880 feet

Accepted Answer

To find the difference in elevation, add the absolute values of the elevations because one is below sea level and the other is above. So, 282 + 14,162 = 14,444 feet.

Question 8

Tom went on a back packing trip in the Rockies. He hiked a total of 14 miles one day. He started at an elevation of 11,026 feet above sea level. At night he camped at 9,450 feet. What was his elevation change?
A)1,576 feet
B)-20,476 feet
C)-1,576 feet
D)20,476 feet

Accepted Answer

His elevation change is the difference between the starting elevation and ending elevation, which is 11,026 - 9,450 = 1,576 feet. A and D are incorrect because they have the wrong sign (positive instead of negative or vice versa). B is incorrect because it has the wrong magnitude (the elevation change cannot be greater than the starting elevation).

Question 9

Subtract: 8 - 0
A)0
B)-8
C)8
D)-0

Accepted Answer

When we subtract 0 from any number, the answer is always that original number. Therefore, the answer to 8 minus 0 is simply 8.

Question 10

Subtract: 6 - 10
A)16
B)-4
C)-16
D)4

Accepted Answer

To subtract a larger number from a smaller number, we need to borrow from the next place value. But in this case, there is no next place value, so we cannot borrow. Therefore, the result will be negative. Subtracting 10 from 6 will result in -4.

Question 11

Subtract: 0 - (-12) 
A)-12
B)12
C)1
D)0

Accepted Answer

When subtracting a negative number, it is the same as adding the positive version of that number. So 0 - (-12) would be the same as 0 + 12, which equals 12. Therefore, the correct answer is B) 12.

Question 12

Perform the indicated operation: (-2.4)- 0.6
A)-3.0
B)-1.8
C)3.0
D)18

Accepted Answer

When you subtract 0.6 from -2.4, you get -3.0 because -2.4 - 0.6 = -3.0.

Question 13

For the month of January, Kansas had an average high of 60 degrees and an average low of -24 degrees. What is the range of temperatures for the month?
A)-36 degrees
B)36 degrees
C)-84 degrees
D)84 degrees

Accepted Answer

Range is the difference between the highest and the lowest values. Therefore, the range of temperatures for January in Kansas would be:
60 degrees (highest temperature) - (-24 degrees) (lowest temperature) = 84 degrees. Therefore, the answer is D, 84 degrees.

Question 14

Evaluate the following: -52 + 6 - 9

Accepted Answer

The answer of Evaluate the following: -52 + 6 -...

Question 15

Evaluate the following: -2 - 7

Accepted Answer

The answer of Evaluate the following: -2 - 7...

Question 16

Subtract: -10 - (-7) 
A)-17
B)3
C)17
D)-3

Accepted Answer

The answer of Subtract: -10 - (-7) 
A)-17
B)3
C)17
D)-3...

Question 17

Subtract: 8 - (-5) 
A)3
B)-13
C)-3
D)13

Accepted Answer

Subtracting a negative number is the same as adding its positive counterpart. Therefore, 8 - (-5) = 8 + 5 = 13.

Question 18

Subtract: -4 - 2
A)6
B)-2
C)-6
D)2

Accepted Answer

When subtracting a negative number, we can rewrite the problem as simply adding the positive version of that number. So -4 - 2 becomes -4 + (-2) which equals -6. Therefore, the correct answer is C) -6.

Question 19

Subtract: -6 - (-15)
A)21
B)-9
C)-21
D)9

Accepted Answer

Subtracting a negative number is the same as adding its positive counterpart. So, -6 - (-15) becomes -6 + 15, which equals 9.

Question 20

Evaluate without using a calculator: (-8)- (-2)
A)10
B)6
C)-10
D)-6

Accepted Answer

The answer of Evaluate without using a calculator: (-8)- (-2)
A)10
B)6
C)-10
D)-6...

Quiz 5: Signed Numbers and Powers of 10

The temperature in Vincennes was -13° at 8:00 A.M. At noon the thermometer read 2°. If Memphis had a temperature variation of twice that of Vincennes, by how many degrees did the temperature change in Memphis?

Subtract: -6 - 6

Evaluate: 4 - 7 - 2 + 11 - 8 + 4

Subtract: -5 - (-5)

Evaluate the following: 0 - 9

Perform the indicated operation: 0 - (-3)

Death Valley is 282 feet below sea level. Mt. Shasta is 14,162 feet above sea level. How far apart in elevation is Death Valley from the summit of Mt. Shasta?

Tom went on a back packing trip in the Rockies. He hiked a total of 14 miles one day. He started at an elevation of 11,026 feet above sea level. At night he camped at 9,450 feet. What was his elevation change?

Subtract: 8 - 0

Subtract: 6 - 10

Subtract: 0 - (-12)

Perform the indicated operation: (-2.4) - 0.6

For the month of January, Kansas had an average high of 60 degrees and an average low of -24 degrees. What is the range of temperatures for the month?

Evaluate the following: -52 + 6 - 9

Evaluate the following: -2 - 7

Subtract: -10 - (-7)

Subtract: 8 - (-5)

Subtract: -4 - 2

Subtract: -6 - (-15)

Evaluate without using a calculator: (-8) - (-2)