Envision Math 2.0: Grade 6, Volume 1
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6. Divide Mixed Numbers
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Exercise 30 Page 48

First, calculate the remaining amount of turkey after Luis makes six 38-pound burgers. Then, divide the remaining amount by 14.

3

Practice makes perfect

We are told that Luis has 3 pounds of ground turkey and that he uses 38 pound per burger to make 6 burgers. We want to know how many 14-pound burgers he can make with the remaining turkey. Number of 14-pound burgers= ? First, let's calculate how much of the ground turkey is left after Luis made six 38-pound burgers.

Amount of Ground Turkey Left

We will start by calculating the amount of ground turkey needed to make the six 38-pound burgers. To do this, we will multiply 38 by 6.
3/8 * 6
3/8 * 6/1
3* 6/8* 1
â–Ľ
Simplify
18/8
18Ă· 2/8Ă· 2
9/4
We found that Luis used 94 pounds of ground turkey to make the 6 burgers. Next, let's subtract 94 from the initial amount of ground turkey, 3 pounds, to calculate how much ground turkey he has left. 3-9/4 Let's write the number 3 as a fraction. Recall that we can only subtract fractions that have the same denominator.
3-9/4
4* 3/4-9/4
12/4-9/4
12-9/8
3/4
We found that Luis has 34 pound of ground turkey left to make 14-pound burgers.

Number of 14-Pound Burgers

Let's calculate the following quotient to find how many 14-pound burgers Luis can make. 3/4Ă·1/4 To divide by the fraction, we can multiply by its reciprocal. 3/4Ă·1/4=3/4*4/1 Let's multiply the fractions!
3/4*4/1
3* 4/4* 1
12/4
3
We found that Luis can make three 14-pound burgers with the remaining turkey.