Unit 1: Operations with Rational Numbers

Front

What is a rational number?

Back

A rational number is any number that can be expressed as the quotient or fraction of two integers, where the denominator is not zero.

Front

What is the sum of two rational numbers?

Back

The sum of two rational numbers is found by adding their numerators and keeping the same denominator, or by finding a common denominator.

Front

What is the difference between two rational numbers?

Back

The difference is found by subtracting the second number from the first, which can involve finding a common denominator.

Front

How do you multiply two rational numbers?

Back

To multiply two rational numbers, multiply their numerators together and their denominators together.

Front

How do you divide two rational numbers?

Back

To divide two rational numbers, multiply the first number by the reciprocal of the second number.

Front

What is the absolute value of a rational number?

Back

The absolute value of a rational number is its distance from zero on the number line, regardless of direction.

Front

What does it mean to increase a number by a certain amount?

Back

To increase a number means to add a positive value to it.

Front

What does it mean to decrease a number by a certain amount?

Back

To decrease a number means to subtract a positive value from it.

Front

What is the process of finding a common denominator?

Back

Finding a common denominator involves identifying a number that is a multiple of the denominators of two or more fractions.

Front

What is the significance of the DOK (Depth of Knowledge) levels?

Back

DOK levels indicate the complexity of a task, with Level 1 being basic recall and Level 2 involving more complex reasoning.