Unit 16: Whole-Number Arithmetic Fluency

Day 26 of 30

Solve multi-step word problems with addition and subtraction

3-5Mathematics

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Learning Objective

Students will be able to solve multi-step word problems with addition and subtraction.

Today's Lesson

In this lesson, we'll explore how to solve multi-step word problems with addition and subtraction. Mathematical thinking develops logical reasoning and problem-solving abilities.

Addition means putting groups together to find the total. When we see 3 + 2, we start with 3 objects and add 2 more. We can count them all to find the answer: 1, 2, 3... then 4, 5. So 3 + 2 = 5. The "+" symbol means "plus" or "add," and the "=" symbol means "equals" or "the same as."

As you work through today's material, pay attention to the examples and try to identify the patterns or strategies being used. This will help you apply these concepts to new problems.

Take notes on key points and make connections to what you've already learned in previous lessons.

Key Terms
Word

A unit of language that carries meaning

Addition

The operation of combining quantities

Subtraction

The operation of finding the difference between quantities

Activities
Instructions
1. Review the example problems for solve multi-step word problems with addition and subtraction. 2. Identify the steps and strategies used. 3. Work through practice problems independently. 4. Compare solutions with a partner.
Materials Needed
  • Notebook
  • Calculator (if needed)
  • Graph paper
Practice Problems
1

Practice Problem 1: Apply what you learned today.

Hint: Review the examples from the lesson.
2

Practice Problem 2: Try a similar problem on your own.

Hint: Use the strategies you learned.
3

Challenge: Can you create your own problem like the ones we practiced?

Hint: Think about the pattern in the problems.

Teaching Tip

For this age group: Balance direct instruction with collaborative activities. Allow students to explain their thinking and make connections to prior knowledge when exploring solve multi-step word problems with addition and subtraction.

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