Real Numbers and Scientific Notation

Front

What are real numbers?

Back

Real numbers include all the numbers on the number line, including rational numbers (fractions and integers) and irrational numbers (like √2 and π).

Front

What is scientific notation?

Back

Scientific notation is a way of expressing numbers as a product of a number between 1 and 10 and a power of 10, e.g., 3.2 x 10^4.

Front

How do you convert a decimal to scientific notation?

Back

Move the decimal point to create a number between 1 and 10, and count the number of places moved to determine the exponent of 10.

Front

What is a rational number?

Back

Front

What is an irrational number?

Back

An irrational number cannot be expressed as a simple fraction; its decimal representation goes on forever without repeating, e.g., √2.

Front

How do you compare two rational numbers?

Back

Convert them to a common denominator or convert them to decimal form to see which is larger.

Front

What is the inequality symbol for 'greater than'?

Back

The symbol for 'greater than' is >.

Front

What is the inequality symbol for 'less than'?

Back

The symbol for 'less than' is <.

Front

Back

Convert 23% to a decimal (0.23) and find values of x that are greater than 0.1667 and less than 0.23.

Front

What is the decimal equivalent of 23%?

Back

The decimal equivalent of 23% is 0.23.