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.
of
Preposition
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Made using.
It is a house of cards.
proposition
Noun
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A proposition is a statement or a suggestion.
The boss's proposition that everybody work for free on Sundays made his workers very unhappy.
—
A proposition is an offer.
I have a proposition for you: if you work on Monday for me, I will work the next two Saturdays for you.