Number Sense (SOL 8.2/8.3 )

Front

What are IRRATIONAL NUMBERS?

Back

Numbers that cannot be expressed as a fraction of two integers. Examples include √2, π, and e.

Front

What are NATURAL NUMBERS?

Back

The set of positive integers starting from 1, 2, 3, and so on.

Front

Identify two numbers between 4 and 5 on the number line.

Back

√17 and √24 are both between 4 and 5.

Front

What is the area of a square if one side is 15 feet?

Back

The area is 15 feet x 15 feet = 225 square feet.

Front

Which of the following is NOT an irrational number: √333, √361, √325, √300?

Back

√361 is not an irrational number; it is a perfect square.

Front

What is the square root of 225?

Back

15, since 15 x 15 = 225.

Front

Define a perfect square.

Back

A number that can be expressed as the product of an integer with itself. Examples: 1, 4, 9, 16.

Front

What is the difference between rational and irrational numbers?

Back

Rational numbers can be expressed as a fraction, while irrational numbers cannot.

Front

Give an example of a rational number.

Back

1/2, 0.75, and -3 are all rational numbers.

Front

What is the approximate value of √20?

Back

Approximately 4.47.