Real Numbers and Their Decimal Expansions
Important Questions on Real Numbers and Their Decimal Expansions
If is expressed in the simplest form as where and are integers and , then find the value of .

Express in the form , where and are integers and .

Express in the form (in the simplest form), where and are integers and

Write in decimal form and say what kind of decimal expansion it has?

Write in decimal form and say what kind of decimal expansion it has?

Write in decimal form and say what kind of decimal expansion it has?

Write in decimal form and say what kind of decimal expansion each has?

Write in decimal form and say what kind of decimal expansion it has?

Write three numbers whose decimal expansions are non-terminating non-recurring.

Look at several examples of rational numbers in the form where and are integers with no common factors other than and having terminating decimal representations (expansions). Can you guess, what property must satisfy?

What can the maximum number of digits be in the repeating block of digits in the decimal expansion of Perform the division to check your answer.

Express in the form Are you surprised by your answer? With your teacher and classmates discuss why the answer makes sense.

You know that . Can you predict what the decimal expansions of are, without actually doing the long division? If so, how?

Write in decimal form and say what kind of decimal expansion it has?

