# Lesson 13 More Story Problems With Teen Numbers

Let’s solve story problems.

## Warm-up Number Talk: Add Ones

Find the value of each expression mentally.

## Activity 1 Sitting or Standing

## Problem 1

There are students standing in the classroom.

Some of the students sit down on the rug.

There are still some students standing.

## Problem 2

There are 15 students standing in the classroom.

Some of the students sit down on the rug.

There are still 5 students standing.

How many students sat down on the rug?

Show your thinking using drawings, numbers, or words.

Equation:

## Activity 2 Solve Story Problems and Compare Methods

There are 17 students in the classroom.

4 students go home.

How many students are still in the classroom?

Show your thinking using drawings, numbers, or words.

Equation:There are 17 students in the classroom.

Some students go home.

Then there are 4 students in the classroom.

How many students went home?

Show your thinking using drawings, numbers, or words.

Equation:

## Activity 3 Centers: Choice Time

Choose a center.

Shake and Spill

Compare

Number Puzzles

## Practice Problem

## Problem 1

There are 12 kids playing soccer.

Then 4 more come to play with them.

How many kids are playing soccer now?

Show your thinking using drawings, numbers, or words.

Equation: