Lesson 20 More Practice to Represent and Solve
Let’s represent and solve more problems.
Warm-up Number Talk: Two Steps
Find the value of each expression mentally.
Activity 1 Info Gap: Introduction
Activity 2 Info Gap: Bake Sale
Your teacher will give you either a problem card or a data card. Do not show or read your card to your partner.
Pause here so your teacher can review your work.
Ask your teacher for a new set of cards and repeat the activity, trading roles with your partner.
Andre has 245 cards. He bought 7 more packages of cards. How many cards does he have now?
What information do you need to know to answer the question?
Write an expression to represent the situation. Use a letter for the unknown quantity.