Mod 2 Topic A Flashcard

Front

What is the total change in elevation when swimming below the surface of the water?

Back

The total change in elevation is the sum of the distances moved below the surface. For example, if Dylan swims 4 feet down and then another 7.5 feet down, the total change is -11.5 feet.

Front

How do you evaluate the expression -2 1/4?

Back

To evaluate -2 1/4, you recognize it as a mixed number, which is equal to -2.25 in decimal form.

Front

What is the opposite of a negative number?

Back

The opposite of a negative number is its positive counterpart. For example, the opposite of -a is +a.

Front

What is the result of the expression -5 + 9?

Back

The result of the expression -5 + 9 is 4.

Front

How do you find the sum of a negative number and its opposite?

Back

The sum of a negative number and its opposite is always zero. For example, -a + a = 0.

Front

What does it mean to evaluate an expression?

Back

Evaluating an expression means to calculate its value by performing the operations indicated.

Front

What is the definition of elevation in a mathematical context?

Back

Elevation refers to the height of an object above a reference point, often sea level or ground level.

Front

How do you represent a negative number on a number line?

Back

A negative number is represented to the left of zero on a number line.

Front

What is the significance of the negative sign in front of a number?

Back

The negative sign indicates that the number is less than zero, representing a deficit or a position below a reference point.

Front

What is a mixed number?

Back

A mixed number is a whole number combined with a fraction, such as 2 1/4.