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Did you know?
The horizontal fraction bar was introduced by the Arabs.
Did you know?
Cyanide works by making the human body unable to use oxygen.
Did you know?
Approximately 500,000 babies are born each year in the United States to teenage mothers.
Did you know?
The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.