Real Numbers Review

Front

What is a perfect square?

Back

A perfect square is a number that can be expressed as the product of an integer with itself. For example, 1, 4, 9, 16, and 25 are perfect squares.

Front

Is 100 a perfect square?

Back

True, because 10 x 10 = 100.

Front

What is a rational number?

Back

A rational number is any number that can be expressed as a fraction a/b, where a and b are integers and b is not zero.

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.

Front

Classify the number 1.01011011101111....

Back

Irrational.

Front

Convert the fraction 8/25 to a decimal.

Back

0.32.

Front

Classify the number 0.478123123123123123....

Back

Rational.

Front

What is the decimal representation of 0.18?

Back

0.18 can be expressed as the fraction 9/50.

Front

How do you convert a decimal to a fraction?

Back

To convert a decimal to a fraction, write the decimal over 1, multiply numerator and denominator by 10 for each digit after the decimal point, and simplify.

Front

What is the decimal equivalent of 9/50?

Back

0.18.