HSPT Math : Negative numbers

Study concepts, example questions & explanations for HSPT Math

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Example Questions

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Example Question #101 : Negative Numbers

Possible Answers:

Correct answer:

Explanation:

The division of two negative numbers yields a positive result.

Example Question #102 : Concepts

Possible Answers:

Correct answer:

Explanation:

In a division problem, if the signs are different (one is negative and one is positive), the answer is negative.

Example Question #691 : Hspt Mathematics

The temperature has been falling an average of  per hour.  If the temperature at 1:00 A.M. is , then what will be the weather at 6:00 A.M.?

Possible Answers:

Correct answer:

Explanation:

If the temperature is dropping  for  hours (1:00 A.M.-6:00 A.M.), then that would be represented as:

If the temperature at 1:00 A.M. is  then:

Subtract and take the sign of the higher absolute value.

The sign of the higher absolute value, which is , is negative.

The temperature is at 6:00 A.M. is the correct answer.

Example Question #103 : Concepts

Possible Answers:

Correct answer:

Explanation:

The rules for adding integers with different sign is to subtract the absolute value of these numbers, and then take the sign of the higher of the two numbers.

 

Because  has the larger absolute value and is positive, the correct answer is:

.

Example Question #105 : Concepts

\dpi{100} -4-(-2)^{3}=

Possible Answers:

\dpi{100} 2

\dpi{100} -4

\dpi{100} -8

Correct answer:

Explanation:

The order of operations is PEMDAS, or (1) Parentheses (2) Exponents (3)Multiplication/Division (4) Addition/Subtraction.

First, we need to cube the quantity \dpi{100} -2.

\dpi{100} (-2)^{3}=-8

Now we are left with \dpi{100} -4-(-8).

Subtracting a negative is the same as adding a positive. So we can rewrite this as

\dpi{100} -4+8=4

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