Englishfor English speakers
arithmetic
Noun
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The kind of mathematics in which addition, subtraction, multiplication, and division are done on numbers.
My son is starting to do simple arithmetic like math2 + 2 = 4/math.
technique
Noun
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A technique is a specialized and skillful way of doing something.
It is important for pilots to be taught the right technique for the take-off run.
The scientists will use a new technique to measure the exact speed of the moon.