# Lesson 2 Story Problems and Equations

Let’s solve story problems and write equations.

## Warm-up Number Talk: Adding 1 More

Find the value of each expression mentally.

## Activity 1 Write Equations

7 people were working on the computers.

3 more people came to the computers.

Now 10 people are working on the computers.Equation:

A group of kids was using 10 puppets to act out a story.

They put 5 of the puppets away.

Now they have 5 puppets left.Equation:

5 people came to story time.

Then 4 more people joined.

Now there are 9 people at story time.Equation:

8 students were doing homework at a table.

3 of the students finished their homework and left the table.

Now there are 5 students at the table.Equation:

## Activity 2 Solve and Write Equations

There was a stack of 6 books on the table.

Someone put 4 more books in the stack.

How many books are in the stack now?

Show your thinking using drawings, numbers, or words.Equation:

9 books were on a cart.

The librarian took 2 of the books and put them on the shelf.

How many books are still on the cart?

Show your thinking using drawings, numbers, or words.Equation:

2 kids were working on an art project.

7 kids join them.

How many kids are working on the art project now?

Show your thinking using drawings, numbers, or words.Equation:

The librarian had 8 bookmarks.

He gave 5 bookmarks to kids at the library.

How many bookmarks does he have now?

Show your thinking using drawings, numbers, or words.Equation:

## Practice Problem

## Problem 1

There are 7 books on the shelf.

Mai takes 2 of the books off the shelf.

How many books are on the shelf now? Does this story match the equation

Show your thinking using drawings, numbers, or words.

Equation: