NUMBER SYSTEM EOY REVIEW

Front

What is the reciprocal of a mixed number?

Back

The reciprocal of a mixed number is found by converting it to an improper fraction and then flipping the fraction. For example, the reciprocal of 4 1/2 (which is 9/2) is 2/9.

Front

What is an integer?

Back

An integer is a whole number that can be positive, negative, or zero. Examples include -3, 0, and 5.

Front

What are the four quadrants of a coordinate plane?

Back

The four quadrants are: Quadrant I (x > 0, y > 0), Quadrant II (x < 0, y > 0), Quadrant III (x < 0, y < 0), Quadrant IV (x > 0, y < 0).

Front

How do you compare two numbers using inequality signs?

Back

You can use > (greater than), < (less than), or = (equal to) to compare two numbers. For example, -3.4 < -2.5.

Front

What is absolute value?

Back

The absolute value of a number is its distance from zero on the number line, regardless of direction. For example, | -24 | = 24.

Front

What is a mixed number?

Back

A mixed number is a whole number combined with a fraction. For example, 3 1/4 is a mixed number.

Front

How do you convert a mixed number to an improper fraction?

Back

Multiply the whole number by the denominator, add the numerator, and place that over the original denominator. For example, 4 1/2 = (4*2 + 1)/2 = 9/2.

Front

What is the number line?

Back

A number line is a straight line with numbers placed at equal intervals along its length, used to represent real numbers.

Front

What does it mean for a number to be between two other numbers?

Back

A number is between two other numbers if it is greater than the smaller number and less than the larger number. For example, -3 is between -6 and 2.

Front

What is the significance of the origin in a coordinate plane?

Back

The origin is the point (0,0) where the x-axis and y-axis intersect. It is the starting point for all coordinates.