The inverse of multiplication is division. The sign used for division is (รท). For example, when you divide 15 by 5 the answer is 3. 15 is called the dividend, 5 is called the divisor and the answer 3 is called the quotient. When teaching division, it is also necessary to teach students about fractions, because you may divide with numbers that leave you with a quotient and also a remainder. Below are videos that assist with teaching division.
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AAA Math Division - Many lesson plans that teach students division facts and relationships.