Rational Numbers CYCLE 1 Flashcard for 7.NS.2

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

How do you add two rational numbers with different denominators?

Back

To add two rational numbers with different denominators, find a common denominator, convert each fraction to an equivalent fraction with that denominator, and then add the numerators.

Front

What is the process for multiplying two rational numbers?

Back

To multiply two rational numbers, multiply the numerators together and multiply the denominators together. The result is a new fraction.

Front

How do you divide one rational number by another?

Back

To divide one rational number by another, multiply the first number by the reciprocal of the second number.

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. It is always a non-negative value.

Front

What does it mean for a number to be negative?

Back

A negative number is a number that is less than zero, indicating a value that is below the reference point of zero on the number line.

Front

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

Back

To convert a mixed number to an improper fraction, multiply the whole number by the denominator, add the numerator, and place that sum over the original denominator.

Front

What is the significance of zero in rational numbers?

Back

Zero is a rational number that represents a neutral point on the number line. It is the additive identity, meaning any number plus zero equals the original number.

Front

How do you find the reciprocal of a rational number?

Back

The reciprocal of a rational number is found by flipping the numerator and denominator. For example, the reciprocal of 3/4 is 4/3.

Front

What is the result of multiplying a positive number by a negative number?

Back

The result of multiplying a positive number by a negative number is a negative number.