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

Children in a library.

  1. 7 people were working on the computers.
    3 more people came to the computers.
    Now 10 people are working on the computers.

    Equation:

  2. 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:

  3. 5 people came to story time.
    Then 4 more people joined.
    Now there are 9 people at story time.

    Equation:

  4. 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

  1. 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:

  2. 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:

  3. 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:

  4. 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 or ?
Show your thinking using drawings, numbers, or words.

Equation: