Real Number System Review

Front

What is the Real Number System?

Back

The Real Number System includes all the numbers that can be found on the number line, including rational and irrational numbers.

Front

Define Rational Numbers.

Back

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

Front

Define Irrational Numbers.

Back

Irrational numbers are numbers that cannot be expressed as a simple fraction; they have non-repeating, non-terminating decimal expansions.

Front

What are Natural Numbers?

Back

Natural numbers are the set of positive integers starting from 1, i.e., 1, 2, 3, 4, ... (some definitions include 0).

Front

What is the square root of 16?

Back

The square root of 16 is 4.

Front

Estimate √18 using the number line.

Back

The best estimate for √18 is 4.2.

Front

Is π a rational number?

Back

No, π is an irrational number.

Front

What is the square root of 2? Is it rational or irrational?

Back

The square root of 2 is approximately 1.414 and it is an irrational number.

Front

Round √7 to the nearest hundredth.

Back

√7 rounded to the nearest hundredth is 2.65.

Front

What is the difference between whole numbers and natural numbers?

Back

Whole numbers include all natural numbers and zero, while natural numbers start from 1.