8.1 Comparing and Ordering Real Numbers

Front

What is scientific notation?

Back

Scientific notation is a way of expressing numbers that are too large or too small to be conveniently written in decimal form. It is written as a number between 1 and 10 multiplied by a power of 10.

Front

Convert 0.000398 to scientific notation.

Back

3.98 x 10^-4

Front

What does the symbol '<' mean in comparisons?

Back

The symbol '<' means 'less than'. It is used to compare two numbers, indicating that the number on the left is smaller than the number on the right.

Front

What does the symbol '>' mean in comparisons?

Back

The symbol '>' means 'greater than'. It is used to compare two numbers, indicating that the number on the left is larger than the number on the right.

Front

How do you compare negative numbers?

Back

When comparing negative numbers, the number with the larger absolute value is actually the smaller number. For example, -3 is less than -2 because 3 > 2.

Front

What is a mixed number?

Back

A mixed number is a whole number combined with a proper fraction. For example, 2 1/2 is a mixed number.

Front

Back

2 4/5

Front

What is the value of -√121?

Back

-√121 = -11.

Front

How do you determine which number is greater: 0.2 or 0.19?

Back

0.2 is greater than 0.19 because it is further to the right on the number line.

Front

What is the purpose of using comparison symbols?

Back

Comparison symbols are used to show the relationship between two numbers, indicating whether one is greater than, less than, or equal to the other.