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The third grade mathematics monthly examination questions
Oh, I don't know about you. 58 is already an integer. Why must it be equal to? Math problem is a subject that needs accurate figures. Generally speaking, doing a problem cannot be equal to an appointment. . . Unless otherwise stated in the title.

Even if there are several decimal points behind it, it is useless to use about equal to it. Unless the decimal point is followed by an infinite number.

You got it? B. Khan