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.
speed
Verb
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When you speed, you move or do something very fast.
The plane sped through the air.
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When you speed in a car, you drive faster than the law allows.
If you speed in your car, you might have an accident.
speed
Noun
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The speed of something is how fast it moves.
sound moves at a very high speed.