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

Classroom with students standing and sitting.

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:

Activity 3 Centers: Choice Time

Choose a center.

Shake and Spill

Center activity. Shake and Spill.

Compare

Center. Compare.

Number Puzzles

Center activity. 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: