# 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.

## 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

1. 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:

2. 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:

Choose a center.

Shake and Spill

Compare

Number Puzzles

## 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: