Number Sense

A positive number is any number greater than zero.

A negative number is any number less than zero.

An integer is a whole number that can be positive, negative, or zero.

A number below sea level is represented as a negative number.

5,000.

-9.

Zero is the integer that separates positive numbers from negative numbers.

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

The absolute value of a number is its distance from zero on the number line, regardless of direction.

To convert a decimal to a fraction, write the decimal as a fraction with a denominator of 10, 100, etc., and simplify.