Englishfor English speakers
practical
Adjective
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If something is practical, it works and is not more difficult that it should be. It makes sense and is good for real life.
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If something is practical, it comes from actually doing something, not from theory.
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If you are practical, you do practical things and think in a practical way.
mathematics
Noun
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Mathematics is the study of numbers.
Use of addition, subtraction, multiplication and division are part of basic mathematics.