7th Grade Math Chapter 3: Integers & Rational Numbers

Front

What is an integer?

Back

An integer is a whole number that can be positive, negative, or zero, but does not include fractions or decimals.

Front

What are rational numbers?

Back

Rational numbers are numbers that can be expressed as the quotient or fraction of two integers, where the denominator is not zero.

Front

How do you convert Fahrenheit to Celsius?

Back

To convert Fahrenheit to Celsius, use the formula: C = (F - 32) × 5/9.

Front

What is the profit formula?

Back

Profit is calculated as: Profit = Total Revenue - Total Costs.

Front

What are the four quadrants of a Cartesian coordinate system?

Back

The four quadrants are: Quadrant I (positive x, positive y), Quadrant II (negative x, positive y), Quadrant III (negative x, negative y), Quadrant IV (positive x, negative y).

Front

What does it mean for a number to be negative?

Back

A negative number is a number that is less than zero, often used to represent a loss or a decrease.

Front

How do you identify the quadrant of a point in the coordinate plane?

Back

To identify the quadrant, look at the signs of the x and y coordinates: Quadrant I (both positive), Quadrant II (x negative, y positive), Quadrant III (both negative), Quadrant IV (x positive, y negative).

Front

What is the absolute value of a number?

Back

The absolute value of a number is its distance from zero on the number line, regardless of direction, and is always non-negative.

Front

How do you add integers with different signs?

Back

To add integers with different signs, subtract the smaller absolute value from the larger absolute value and take the sign of the integer with the larger absolute value.

Front

What is the significance of the number zero in integers?

Back

Zero is considered an integer and serves as the neutral element in addition, meaning adding zero to any integer does not change its value.