A numerical expression is a mathematical phrase involving only numbers and one or more operational symbols. The following are some examples of numerical expressions. For example, the numerical expression 4 + 20 - 7 in the example above simplifies to the number 17.
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A monomial is an expression that is either:1) a numeral,2) a variable,or 3) the product of a numeral and one or more variables.A variable can be thought of as the product of the numeral 1 and the variable, thus making it a monomial.
The numeral 8 is an example of the Hindu-Arabic counting numerals. That is to say the numbers that we use today which replaced Roman numerals.
A bar over a Roman numeral multiplies the base numeral by 1000. Example: V with a bar over it = 5000
for example a is numeral 1, b is numeral 2, c is 3, d is 4, e is 5 f is 6 and so on
Example: if somebody says something funny you EXPRESSION on your face will be smiling or happy.