Count : To count means to find out the number of objects by adding one for every object.

Number : A number $x$ is a mathematical symbol representing a quantity.

Decimal point : The point in a decimal separating the digits representing multiples of wholes from the digits representing fractions of wholes.

Hundred : Hundred refers to the number 100.

Hundredth : Hundredth refers to the number $\frac{1}{100}=0.01=10^{-2}.$

Tenth : Tenth refers to the number $\frac{1}{10}=0.1=10^{-1}.$

Negative : A number is negative if it is $\lt 0.$

Number : A number $x$ is a mathematical symbol representing a quantity.

Positive : Positive means $\geq 0.$