It means to do the calculation until you have a single number as a result.
It means to find the numerical value of the expression.
Inequality
Find the numerical value of.
Evaluate.
sequence
I think it means to find the theoretical probability of something random that has results that are numbers. For instance, rolling a die and trying to get a 6 is a "chance activity with numerical outcomes".
You evaluate it.
quantity!* * * * *Evaluating it.
You evaluate the expression !! :)
to solve for the variable
Simplify !
That depends what either the value of a or the value of b is.