2. describe the location of positive and negative numbers as related to zero.

Positive numbers are any numbers greater than zero, for example: 1, 2.9, 3.14159, 40000, and 0.0005. For each positive number, there is a negative number that is its opposite. We write the opposite of a positive number with a negative or minus sign in front of the number, and call these numbers negative numbers. The opposites of the numbers in the list above would be: -1, -2.9, -3.14159, -40000, and -0.0005. Negative numbers are less than zero (see the number line for a more complete explanation of this). Similarly, the opposite of any negative number is a positive number. For example, the opposite of -12.3 is 12.3.

We do not consider zero to be a positive or negative number.  

The sum of any number and its opposite is 0.

The sign of a number refers to whether the number is positive or negative, for example, the sign of -3.2 is negative, and the sign of 442 is positive.

We may also write positive and negative numbers as fractions or mixed numbers.

Step-by-step explanation:

Sorry but the person above me is wrong.

He/she put unnecessary confusing explanations down.  I turned this in for K12 math journal and got 100% here:

Positive numbers are greater than zero and it are on the right side of zero on the number line. Negative numbers are less than zero and are on the left side of zero.

144.50

step-by-step explanation:

21.5 x 13.4=288.10 divide by 2