Englishfor English speakers
calculate
Verb
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If you calculate something, you find its value, usually by using mathematics.
These scores were calculated by subtracting total errors from total correct.
The computers can calculate how much your family can afford to pay for college.
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If you calculate something, you find the answer by thinking about the facts.
The leaders seems to have calculated that the political benefit outweighs the cost to their people.
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If something is calculated to do something, you hope or expect it to do it.
She waved her hands around in a way calculated to make him laugh.
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If you calculate on something, you plan on it or expect it.
He hadn't calculated on her being late.
interest
Noun
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When someone wants to know more about something or likes to do something, we say the person has an interest in it.
She has a strong interest in art. She is going to go to an art school.
What are your interests?
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When something is important to a person, or if good things happening to the thing are good for the person, we say that the person has an interest in the thing.
Because I own a house on this street, I have an interest in keeping the street clean.
I'm doing this to look after my own interests.
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When someone borrows money, they have to give back more money than they borrowed. The extra money they have to pay is called interest.
The bank gives me two percent interest per year on the money in my account.
interest
Verb
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If someone is interested, they are curious and want to find out about something.
I am interested in researching flowers.
Does maths interest you?