# 3.OA.A.3 Modeling Multi-Step Problem_Derek's Cookout

## 3.OA.A.3 Modeling Multi-Step Problem

Evidence Statement 3.D.1  Solve multi-step contextual word problems with degree of difficulty appropriate to Grade 3, requiring application  of knowledge and skills in Type 1 Evidence Statements

### Derek's Cookout

Derek bought hamburger and hot dog rolls for a cookout.

• He bought 5 packages of hot dog rolls, with 6 rolls in each package.
• He also bought 7 packages of hamburger rolls, with 8 rolls in each package.

Find the total number of rolls Derek bought for his cookout.

## Scoring Rubric

### Score of 3 Points

Student response includes each of the following 3 elements.

·         Computation component- identifies the correct number of rolls as 86 total rolls.

·         Modeling component: Provides equations showing how to find the total number of the two different types of rolls.

·         Modeling component- Provides an equation to find the total number of rolls.

Sample Student Response: Derek had a total of 86 total rolls. 7 x 8 = 56 is the total number of hamburger rolls. 5 x 6 = 30 is the total number of hotdog rolls. I used the equation 56 + 30 = 56 to find the total number of rolls Derek bought.

### Score of 2 Points

Student response includes 2 of the 3 elements. Or, the student does not compute the correct total number of rolls due to a computation error but provides a valid strategy and equations.

### Score of 1 Point

Student response includes 1 of the 3 elements.

### Score of 0 Points

Student response is incorrect or irrelevant.