# 2.OA.A.1- Modeling Multi- Step Word Problems_Brooks' Wallet

## 2.OA.1- Modeling Multi-Step Word Problems

Evidence Statement 3.D.2- Solve multi-step contextual problems with degree of difficulty appropriate to Grade 3, requiring application of knowledge and skills articulated in 2.OA.A, 2.OA.B and/or 2.MD.B

### Part A

Brooks has $26 in his wallet and$59 in his room.

He uses some of his money to buy a new game that costs $68. What is the total amount of money that Brooks has left after he buys the game? Enter your answer in the space provided. ### Part B Brooks does chores around the house and earns more money. He now has$45.

How much money did Brooks earn doing chores?

### Part C

The table shows toys at the toy store and the amount of money each item costs.

The following toys are avaiable at the toy store. The cost of each item is listed. Football $23.00, Drawing Kit$17.00 ,Video Game $41.00, Building Blocks Set$29.00.

Brooks wants to buy 2 toys from the store.

What two toys can he buy?

Show your work and your explanation to tell how you know Brooks has enough money to buy the toys.

## Scoring Rubric

### Part A

Score of 3- Student response includes each of the following elements.

• Computation component- $17 or 17 dollars • Modeling component- shows correct work of addition • Modeling component- shows correct work of subtraction Sample solution: Addition of the two money amounts ($26 + $59=$85) and the subtraction of the price of the game ($85-$68 = $17). Notes: • Student can get credit for both parts with a single equation such a$26 + $59 -$68= $17 • Student does not need to show an equation, but if an equation is used, the equation must be correct. •$26.00+$59=$85-68=$17 is considered a nonsense equation and is not acceptable. Score of 2- Student response includes 2 of the 3 elements. Or, the student has a computation error but provides a valid strategy. Score of 1- Student response includes 1 of the 3 elements. Score of 0- Student response is incorrect or irrelevant. ### Part B Score of 1- computation component:$34

Score of 0- Student response is incorrect.

### Part C

Score of 2- Student response includes each of the following 2 elements.

• Computation component: Football and Drawing Kit
• Modeling component- The student shows a valid strategy to find the two toys that can be purchased. For example, the student shows the equation $23 +$17= $40. Brooks has$45 so he has enough money to buy the football and drawing kit.

Score of 1- Student response includes 1 of the 2 elements. Or, the student has a computation error, but provides a valid strategy.

Score of 0- Student response is incorrect or irrelevant.