the part of mathematics that involves the adding and multiplying, etc. of numbers算术
calculations involving adding and multiplying, etc. numbers算术运算;演算;计算
More examples
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!
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