Problem Solving: Two-Question Problems Lesson 8-5 CCSS 4.NBT.5, 4.OA.3

MATH Essential Questions How do I know where to begin when solving a problem? MATH Essential Questions

MATH Essential Questions How does explaining my process help me to understand a problem’s solution better? MATH Essential Questions

MATH Essential Questions How do I decide what strategy will work best in a given problem situation? MATH Essential Questions

MATH Essential Questions What do I do when I get stuck? MATH Essential Questions

MATH Essential Questions How do I know when a result is reasonable? MATH Essential Questions

MATH Essential Questions What is the relationship between solving problems and computation? MATH Essential Questions

Warm Up Sam has 8 pizzas. He gives half of them away. Then his mother brings him 8 more pizzas. How many pizzas does Sam have in all?

Think and Write Tell about a problem that you have solved that required you to do more than one thing to solve it.

Let’s look at the Envision Video for this lesson and take the quiz. Today’s Lesson In this lesson, you will learn how answering one question can allow you to answer another question. Let’s look at the Envision Video for this lesson and take the quiz.

Steps to Solving Two Step Problems 1. Read the problem carefully. 2. Underline the questions being asked. 3. Number the questions in the order that they must be answered. 4. Solve the first question. 5. Use the answer to the first question to help you solve the second question.

Sample Problem There are 6 frogs in the pond. 4 more frogs join them. How many frogs are there in all? If 3 frogs leave, how many frogs are left? 1. Read the problem carefully. 2. Underline the questions being asked. 3. Number the questions in the order that they must be answered. 4. Solve the first question. 5. Use the answer to the first question to help you solve the second question.

Question 1 Problem 1: James draws 3 monsters. Each monster has 7 eyes. How many eyes are there in all? Problem 2: If James draws 1 more monster, how many eyes will there be in all?

Question 2 Rhonda buys a shirt for $14, a necklace for $12, and a bracelet for $7. How much does she spend? If she pays with a $50, how much change will she receive?

Question 3 Alice drives 24 miles on Wednesday and 27 miles on Thursday. How many miles does she drive in all? If Alice drives the same amount on Friday that she does on Wednesday, how many miles does she drive on all three days?

Question 4 When Mrs. Reyes bakes, she puts 12 gingerbread cookies on each tray. If she bakes 4 trays, how many cookies does she make in all? If Mrs. Reyes gives 24 cookies to her friend, how many will she have left?

Question 5 Freddie runs 4 miles per day. How many miles does he run in each week? If Freddie runs every day for 3 weeks, how many total miles will he run?

Lesson Wrap Up In this lesson, you learned how answering one question can allow you to answer another questions. Reflection in Notebook: The strategy that works best for me when solving problems is… Center Activity – (8-5). Homework (8-5 Practice) for one “Paw Signature” and (8-4 Reaching & Practice) if you want two “Paw Signatures.” Website for Practice: http://www.internet4classrooms.com/skill_builders/w ord_problems_math_fourth_4th_grade.htm