What does all that add up to? I'm afraid my mental arithmetic isn't very good.
These kids have had seven years in school and they can't even do some simple arithmetic!
She was taught reading, writing and arithmetic at the village school.
He tried to do his tax form but he couldn't work out all the arithmetic.
I couldn't work in a post office - there is too much arithmetic involved!
I say that the milk is as necessary as either the books or the arithmetics.
One cannot justify that merely by reference to the arithmetics.
Thus, as long as a vortex is passively convecting downstream, its speed is well approximated by the arithmetic mean of the two free-stream velocities.
