Unit 4, Lesson 17
Use the 4 Operations to Solve Problems
Grade 3
Preparation
Lesson Purpose
The purpose of this lesson is for students to solve two-step problems using all four operations.
Lesson Narrative
Previously, students have solved two-step problems involving addition, subtraction, and multiplication. Here, they consider what mathematical questions could be asked about a situation and then solve two-step problems that include division where the factors are limited to single-digit numbers. Parentheses are revisited as a tool students can use to specify which operation happens first in the equation so that it matches the situation they are representing.
- Engagement
- MLR5
- Explain (orally) strategies for solving two-step word problems using any of the four operations.
- Represent two-step word problems using equations with a letter standing for the unknown quantity.
- Let’s use the four operations to solve problems.
Required Materials
Activity 2
Required Preparation
None
Teacher Reflection Questions
How has your students’ understanding of two-step word problems evolved from previous lessons? How have their experiences with multiplication and division in this unit influenced their problem solving strategies?
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