Ordering and Comparing Real Numbers

Front

What is a real number?

Back

A real number is any number that can be found on the number line. This includes all the rational numbers (like integers and fractions) and all the irrational numbers (like square roots and pi).

Front

How do you compare two real numbers?

Back

To compare two real numbers, you can use the symbols < (less than), > (greater than), or = (equal to). You can also visualize their positions on a number line.

Front

What does it mean to order numbers in descending order?

Back

Ordering numbers in descending order means arranging them from the largest to the smallest.

Front

What is the decimal equivalent of 81%?

Back

The decimal equivalent of 81% is 0.81.

Front

How do you convert a fraction to a decimal?

Back

To convert a fraction to a decimal, divide the numerator by the denominator.

Front

What is the square root of 5 approximately?

Back

The square root of 5 is approximately 2.236.

Front

How do you express a number in scientific notation?

Back

A number is expressed in scientific notation as a product of a number between 1 and 10 and a power of 10. For example, 3000 can be written as 3.0 x 10^3.

Front

What is the greatest common factor (GCF)?

Back

The greatest common factor (GCF) is the largest number that divides two or more numbers without leaving a remainder.

Front

How do you find the least common multiple (LCM)?

Back

To find the least common multiple (LCM) of two numbers, list the multiples of each number and find the smallest multiple they have in common.

Front

What is the difference between rational and irrational numbers?

Back

Rational numbers can be expressed as a fraction of two integers, while irrational numbers cannot be expressed as a simple fraction.