Classifying Numbers Review Quiz

SELECT ALL THAT APPLY.

Define a rational number.

• Non-repeating & non-terminating decimal

• Square root of a perfect square

• Can be written into a fraction

• Repeating or terminating decimal

• Rational

• Irrational

Answer explanation

This is a mixed number. A mixed number is a whole number & a fraction. Because of the fraction, it's RATIONAL.

• Rational

• Irrational

Answer explanation

It is a non-terminating decimal. It is a non-repeating decimal. It's IRRATIONAL.

• Rational

• Irrational

Answer explanation

It's a repeating decimal. It can be turned into a fraction 7/9. It's RATIONAL.

Definition of Natural Numbers

The set of all positive ___ numbers (starting with 1).

SELECT ALL THAT APPLY

Which number(s) represents a natural number?

• -10

• 
• 
• 10

Answer explanation

50/2 equals 25.

You can count to 10 and 25 by 1s.

THEY ARE NATURAL NUMBERS.

Definition of Whole Numbers

The set of all positive counting numbers (starting with ___ ).

SELECT ALL THAT APPLY

Which number(s) represents a whole number?

• -3

• 0

• 3

• 10

Answer explanation

A whole number is just a natural number, but you start at 0.

Start at 0, can you count up to 3 by 1s?

Start at 0, can you count up to 10 by 1s?

Definition of Integers

The set of whole numbers and their ___.

SELECT ALL THAT APPLY

Which number(s) represents an integer?

• 
• 
• 
• 

Answer explanation

The cube root of 125 is 5 because 5x5x5=125.

-6/2 = -3

125 is a whole number.

-3 is a negative whole number (the opposite of 3).

THEY ARE BOTH INTEGERS.