High School Math : Integers

Study concepts, example questions & explanations for High School Math

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Example Questions

Example Question #3 : How To Do Absolute Value In Pre Algebra

Solve the absolute value expression.

\(\displaystyle \small \small 6\left | 3-8 \right |+14\)

Possible Answers:

\(\displaystyle 80\)

\(\displaystyle -16\)

\(\displaystyle -52\)

\(\displaystyle 44\)

Correct answer:

\(\displaystyle 44\)

Explanation:

\(\displaystyle \small \small 6\left | 3-8 \right |+14\)

Simplify the absolute value, as if it were a parenthesis.

\(\displaystyle \small \small 6\left | -5 \right |+14\)

The absolute value of \(\displaystyle -5\) is \(\displaystyle 5\). Remember that absolute values are always positive.

\(\displaystyle \small (6)(5)+14\)

\(\displaystyle \small 30+14=44\)

Example Question #83 : High School Math

Is the inequality below true or false?

\(\displaystyle \small \small \left | -7 \right |>12-6\)

 

 

Possible Answers:

False; the two terms are equal

The answer cannot be determined

False; the sign should be changed to "less than"

True

Correct answer:

True

Explanation:

An absolute value is always the positive solution.

\(\displaystyle \small \left | -7 \right |=7\)

We can compare the terms by substituting the positive value of \(\displaystyle 7\), and solving the right side of the inequality.

\(\displaystyle \small \small \small \left | -7 \right |>12-6\)

\(\displaystyle \small \left | -7 \right |>6\)

\(\displaystyle \small 7>6\)

The inequality is a true expression.

Example Question #5 : How To Do Absolute Value In Pre Algebra

Evaluate  \(\displaystyle \left | -6+5-2 \right |\)

Possible Answers:

\(\displaystyle -5\)

\(\displaystyle -3\)

\(\displaystyle 1\)

\(\displaystyle 3\)

\(\displaystyle 13\)

Correct answer:

\(\displaystyle 3\)

Explanation:

To solve problems with absolute value, first solve inside the absolute value signs. \(\displaystyle -6+5-2 = -3\) .

The absolute value of \(\displaystyle -3\) is \(\displaystyle 3\) because the negative sign is inside the absolute value signs. Remember the absolute value is the distance from that number to zero on the number line. Therefore, the absolute value is always positive. 

Example Question #1 : How To Do Absolute Value In Pre Algebra

Evaluate the expression.

\(\displaystyle \left | 3-5\right |\)

Possible Answers:

\(\displaystyle 2\)

\(\displaystyle -15\)

\(\displaystyle -2\)

\(\displaystyle 8\)

\(\displaystyle 15\)

Correct answer:

\(\displaystyle 2\)

Explanation:

First, treat the absolute value as a parenthesis, and evaluate the term inside.

\(\displaystyle \left | 3-5\right |\)

\(\displaystyle \left | -2\right |\)

The absolute value of any term is its distance from zero. A distance cannot be negative, thus, any negative term in an absolute value will be converted to a positive term.

\(\displaystyle \left | -2\right |=2\)

Example Question #84 : High School Math

\(\displaystyle \left |-3 \right |=?\)

Possible Answers:

\(\displaystyle 6\)

\(\displaystyle -3\)

\(\displaystyle 3\)

\(\displaystyle 1\)

\(\displaystyle -6\)

Correct answer:

\(\displaystyle 3\)

Explanation:

The absolute value of a number can be thought of as its distance from zero. \(\displaystyle -3\) is three units away from zero. Therefore, \(\displaystyle \left |-3 \right |=3\).

Example Question #8 : How To Do Absolute Value In Pre Algebra

\(\displaystyle \left | 3^2-12\right |=?\)

Possible Answers:

\(\displaystyle -3\)

\(\displaystyle -4\)

\(\displaystyle \frac{3}{4}\)

\(\displaystyle 3\)

\(\displaystyle 4\)

Correct answer:

\(\displaystyle 3\)

Explanation:

The absolute value of a number can be thought of as its distance from zero.

We start by solving the expression inside the absolute value signs and then measure how far that is from zero.

\(\displaystyle \left | 3^2-12\right |\)

\(\displaystyle =\left | 9-12\right |\)

\(\displaystyle =\left | -3\right |\)

\(\displaystyle -3\) is three units away from zero. Therefore, \(\displaystyle \left | 3^2-12\right |=\left |-3 \right |=3.\)

Example Question #9 : How To Do Absolute Value In Pre Algebra

\(\displaystyle \left | -5+3\right |=?\)

Possible Answers:

\(\displaystyle 2\tfrac{1}{2}\)

\(\displaystyle 2\)

\(\displaystyle 8\)

\(\displaystyle -2\)

\(\displaystyle -8\)

Correct answer:

\(\displaystyle 2\)

Explanation:

The absolute value of a number can be thought of as its distance from zero.

We start by solving the expression inside the absolute value signs and then measure how far that is from zero.

\(\displaystyle \left | -5+3\right |\)

\(\displaystyle =\left | -2\right |\)

\(\displaystyle -2\) is two units away from zero. Therefore \(\displaystyle \left | -5+3\right |=\left | -2\right |=2.\)

Example Question #10 : How To Do Absolute Value In Pre Algebra

\(\displaystyle \left | 12+24\right |=?\)

Possible Answers:

\(\displaystyle 2\)

\(\displaystyle -36\)

\(\displaystyle 36\)

\(\displaystyle \frac{1}{2}\)

\(\displaystyle -2\)

Correct answer:

\(\displaystyle 36\)

Explanation:

The absolute value of a number can be thought of as its distance from zero.

We start by solving the expression inside the absolute value signs and then measure how far that is from zero.

\(\displaystyle \left | 12+24\right |\)

\(\displaystyle =\left | 36\right |\)

\(\displaystyle 36\) is \(\displaystyle 36\) units away from zero. That means that \(\displaystyle \left | 12+24\right |=\left | 36\right |=36.\)

Example Question #31 : Integers

What is \(\displaystyle |-3|\) ?

Possible Answers:

\(\displaystyle 2\)

\(\displaystyle 3\)

\(\displaystyle 6\)

\(\displaystyle 0\)

\(\displaystyle -3\)

Correct answer:

\(\displaystyle 3\)

Explanation:

The absolute value of \(\displaystyle -3\) or, mathematically, \(\displaystyle |-3|\), measures the distance between the number and zero. Since \(\displaystyle -3\) is three units away from zero, the absolute value will be \(\displaystyle 3\).

Example Question #32 : Integers

What is the absolute value of \(\displaystyle -3\) ? 

Possible Answers:

\(\displaystyle -3\)

\(\displaystyle 3\)

\(\displaystyle 9\)

\(\displaystyle 6\)

\(\displaystyle 0\)

Correct answer:

\(\displaystyle 3\)

Explanation:

Recall that absolute value describes the distance a number is from \(\displaystyle 0\). As a result of this, absolute value is always positive. Then, we have that the absolute value of \(\displaystyle -3\) must be \(\displaystyle 3\)

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