Envision Math 2.0: Grade 6, Volume 1
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6. Divide Mixed Numbers
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Exercise 18 Page 47

Rewrite the mixed numbers as fractions. Then multiply the first fraction by the reciprocal of the second fraction.

4/3 or 1 13

Practice makes perfect
Before we evaluate the expression, let's first rewrite it so that all of the numbers are fractions.
4 13 Ă· 3 14
4 * 3+1/3 Ă· 3 * 4+1/4
12+1/3 Ă· 12+1/4
13/3 Ă· 13/4
The quotient of 4 13 and 3 14 is the same as the quotient of 133 and 134. 4 13 Ă· 3 14 &= 133 Ă· 13/4 &= * &= Now, dividing fractions is the same as multiplying the first fraction by the reciprocal of the second fraction. 4 13 Ă· 3 14 &= 133 Ă· 13/4 &= 13/3 * 4/13 &= When multiplying fractions, remember that the product of two fractions is equal to the product of the numerators over the product of the denominators.
13/3 * 4/13
13 * 4/3 * 13
52/39
52/13/39/13
4/3
Finally, we can write the fraction as a mixed number.
4/3
3+1/3
3/3+1/3
1+1/3
1 13
The quotient is 43 or 1 13. 4 13 Ă· 3 14 &= 133 Ă· 13/4 &= 13/3 * 4/13 &=4/3or1 13