(four times ten)less twenty
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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.
A numerical expression in math terms has numbers and operations like for an example 1. 4+9 2. (8-2)+5
3 + (8/4) = 5
What kind of mathematical phrase? can you please cite some examples?
it is a varible