Solved Exercises on One Step Word Problems Lesson Plan in Grade 3

Master one step word problems: addition, subtraction, multiplication, division, and mixed operations through this comprehensive lesson plan with 10 detailed exercises.

Solution: Exercises 1 to 3
1 Addition problem
Exercise 1
Sarah has 15 stickers. Her friend gives her 8 more stickers. How many stickers does Sarah have now?
Definition:

Addition word problem: Finding the total when combining two or more quantities

Solution method:
  1. Identify the numbers involved: 15 and 8
  2. Recognize the operation needed: addition (combining quantities)
  3. Add the numbers together
Starting amount
15 stickers
Added amount
+ 8 stickers
Total
23 stickers
Step 1: Identify what we know

Sarah starts with 15 stickers

Her friend gives her 8 more stickers

Step 2: Determine the operation

Keywords: "more", "now" indicate addition

Step 3: Perform the calculation

15 + 8 = 23

Step 4: State the answer in context

Sarah has 23 stickers now

15 + 8 = 23 stickers
Final answer:

Sarah has 23 stickers now

Applied rules:

• Keyword identification: Look for words indicating addition

• Operation selection: Choose addition for combining quantities

• Calculation: Add the numbers together

2 Subtraction problem
Exercise 2
Tom had 28 marbles. He gave 12 marbles to his brother. How many marbles does Tom have left?
Definition:

Subtraction word problem: Finding what remains after taking away a quantity

Starting amount
28 marbles
Amount taken away
- 12 marbles
Remaining
16 marbles
Step 1: Identify what we know

Tom started with 28 marbles

He gave away 12 marbles

Step 2: Determine the operation

Keywords: "gave", "left" indicate subtraction

Step 3: Perform the calculation

28 - 12 = 16

Step 4: State the answer in context

Tom has 16 marbles left

28 - 12 = 16 marbles
Final answer:

Tom has 16 marbles left

Applied rules:

• Keyword identification: Look for words indicating subtraction

• Operation selection: Choose subtraction for taking away

• Calculation: Subtract the smaller number from the larger

3 Multiplication problem
Exercise 3
There are 5 bags of apples. Each bag has 4 apples. How many apples are there in total?
Definition:

Multiplication word problem: Finding the total when equal groups are combined

Number of groups
5 bags
Items per group
× 4 apples
Total
20 apples
Step 1: Identify what we know

There are 5 bags

Each bag has 4 apples

Step 2: Determine the operation

Keywords: "each", "total" indicate multiplication

Step 3: Perform the calculation

5 × 4 = 20

Step 4: State the answer in context

There are 20 apples in total

5 × 4 = 20 apples
Final answer:

There are 20 apples in total

Applied rules:

• Keyword identification: Look for words indicating equal groups

• Operation selection: Choose multiplication for repeated addition

• Calculation: Multiply the number of groups by items per group

Solution: Exercises 4 to 5
4 Division problem
Exercise 4
Maria has 18 cookies. She wants to share them equally among 6 friends. How many cookies will each friend get?
Definition:

Division word problem: Finding how many equal parts or groups can be made

Total items
18 cookies
Number of groups
÷ 6 friends
Per group
3 cookies
Step 1: Identify what we know

Maria has 18 cookies

She wants to share them equally among 6 friends

Step 2: Determine the operation

Keywords: "equally", "each" indicate division

Step 3: Perform the calculation

18 ÷ 6 = 3

Step 4: State the answer in context

Each friend will get 3 cookies

18 ÷ 6 = 3 cookies per friend
Final answer:

Each friend will get 3 cookies

Applied rules:

• Keyword identification: Look for words indicating sharing equally

• Operation selection: Choose division for equal sharing

• Calculation: Divide the total by the number of groups

5 Comparison problem
Exercise 5
Jake read 35 pages of a book. Emma read 27 pages of the same book. How many more pages did Jake read than Emma?
Definition:

Comparison word problem: Finding the difference between two quantities

Jake's pages
35 pages
Emma's pages
- 27 pages
Difference
8 pages
Step 1: Identify what we know

Jake read 35 pages

Emma read 27 pages

Step 2: Determine the operation

Keywords: "more", "than" indicate subtraction (finding difference)

Step 3: Perform the calculation

35 - 27 = 8

Step 4: State the answer in context

Jake read 8 more pages than Emma

35 - 27 = 8 more pages
Final answer:

Jake read 8 more pages than Emma

Applied rules:

• Keyword identification: Look for words comparing quantities

• Operation selection: Choose subtraction for "how many more"

• Calculation: Subtract the smaller number from the larger

Lesson Plan Components
Learning Objectives

Students will be able to identify the correct operation for one-step word problems.

Students will solve addition, subtraction, multiplication, and division word problems.

Students will explain their thinking process when solving problems.

Materials Needed

Manipulatives (counters, blocks, etc.)

Worksheets with word problems

Whiteboard and markers

Student journals for reflection

Assessment Criteria

Correctly identifies the operation needed

Accurately solves the problem

Explains the solution process

Uses appropriate keywords

10 min
Warm-up
20 min
Instruction
25 min
Guided Practice
15 min
Independent Work
Warm-up Activity
Quick review of basic operations
Modeling
Demonstrate problem-solving steps
Group Work
Collaborative problem solving
Formative
Ongoing
Summative
End of lesson
Self-Assessment
Reflection
Complete Lesson Plan Guide
Introduction (10 minutes)

Review basic operations with simple number sentences

Introduce the concept of word problems as real-life math

Present the "READ" strategy: Read, Examine, Act, Discuss

Direct Instruction (20 minutes)

Model the problem-solving process step by step

Identify keywords that indicate each operation

Practice with teacher-led examples

Guided Practice (25 minutes)

Work through problems as a class

Encourage student participation and discussion

Provide immediate feedback

Independent Practice (15 minutes)

Students solve problems individually

Teacher circulates to provide support

Collect work for assessment

Closure (5 minutes)

Review key concepts learned

Students share one thing they learned

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One Step Word Problems Lesson Plan

Standards Alignment

CCSS.MATH.CONTENT.3.OA.A.3: Use multiplication and division within 100 to solve word problems

CCSS.MATH.CONTENT.3.OA.D.8: Solve two-step word problems using the four operations

Differentiation Strategies

For Struggling Learners: Provide manipulatives, simpler numbers, additional scaffolding

For Advanced Learners: Challenge with multi-step problems, create own problems

For English Language Learners: Use visual cues, vocabulary support, collaborative learning

Technology Integration
Interactive whiteboard, educational apps
Cross-Curricular Links
Science measurements, social studies data
Home Connection
Real-world problem examples

Questions & Answers

Question: How can I differentiate instruction for students who struggle with reading comprehension in word problems?

Answer: Try these differentiation strategies:

  • Read-aloud: Have students listen to problems being read aloud
  • Visual aids: Use pictures, diagrams, or manipulatives to represent the problem
  • Simplified language: Rephrase problems using familiar vocabulary
  • Highlighting: Mark important numbers and keywords for students

Focus on the mathematical concepts rather than reading ability.

Question: How can I help my child practice word problems at home?

Answer: Create real-world connections:

  • Use everyday situations: cooking, shopping, sports scores
  • Start with simple problems and gradually increase difficulty
  • Encourage your child to explain their thinking
  • Practice regularly but keep sessions short (10-15 minutes)

Make it fun by turning problems into games or challenges.

Question: What are effective assessment strategies for word problem skills?

Answer: Use multiple assessment approaches:

  • Formative: Observe during guided practice, use exit tickets
  • Summative: Include various problem types in tests
  • Performance: Have students create and solve their own problems
  • Self-assessment: Use reflection prompts and rubrics

Focus on process, not just the final answer.

Complete Summary: One Step Word Problems Lesson Plan

Definitions of Key Concepts

Word Problem: A mathematical question presented in narrative form using everyday situations.

One-Step Problem: A problem that requires only one mathematical operation (addition, subtraction, multiplication, or division) to solve.

Keywords: Words that indicate which mathematical operation to use (e.g., "more" suggests addition, "left" suggests subtraction).

Operations: Addition (+), subtraction (-), multiplication (×), and division (÷) used to solve mathematical problems.

Lesson Plan: A detailed outline of learning objectives, activities, and assessments for a specific topic.

Core Rules and Principles

Addition: Used when combining quantities, finding totals, or increasing amounts. Keywords: more, total, altogether, sum, increase.

Subtraction: Used when taking away, finding differences, or determining what remains. Keywords: less, fewer, left, difference, decrease.

Multiplication: Used for equal groups, repeated addition, or finding totals of identical sets. Keywords: each, groups of, times, product.

Division: Used for sharing equally, finding equal parts, or determining how many groups. Keywords: each, shared equally, per, distributed.

Effective Lesson Planning: Should include clear objectives, varied activities, differentiation strategies, and multiple assessment methods.

Step-by-Step Method
  1. Read Carefully: Understand the situation described in the problem.
  2. Identify Information: Find numbers and important details.
  3. Look for Keywords: Determine which operation to use based on clue words.
  4. Set Up Equation: Write the mathematical expression that represents the problem.
  5. Solve: Calculate the answer using the appropriate operation.
  6. Check: Verify that your answer makes sense in the context of the problem.
Examples (Simple to Advanced)

Simple Addition: "Tom has 3 apples. He gets 2 more. How many does he have?" (3 + 2 = 5)

Simple Subtraction: "Sarah has 8 cookies. She eats 3. How many are left?" (8 - 3 = 5)

Simple Multiplication: "There are 4 bags with 3 candies each. How many candies total?" (4 × 3 = 12)

Simple Division: "12 cookies shared equally among 4 friends. How many each?" (12 ÷ 4 = 3)

Advanced Comparison: "Jake read 25 pages. Emma read 18 pages. How many more did Jake read?" (25 - 18 = 7)

Tips, Tricks, and Common Pitfalls

Tips: Draw pictures to visualize the problem; underline important numbers; circle keywords; estimate your answer first.

Tricks: Remember that "more than" often means subtraction for comparison problems; "in all" usually means addition.

Common Pitfalls: Choosing the wrong operation due to misreading keywords; forgetting to include units in your answer; not checking if the answer makes sense.

Memory Aid: "ASMD" - Addition, Subtraction, Multiplication, Division. Think of the order of operations and problem complexity.

Lesson Planning Tips: Include multiple learning styles, provide scaffolding, incorporate formative assessment, and allow for differentiation.

Key Notes for Memorization

Addition Keywords: more, total, altogether, sum, combined, increased by, in all.

Subtraction Keywords: less, fewer, left, difference, decrease, take away, how many more.

Multiplication Keywords: each, groups of, times, product, twice, double, triple.

Division Keywords: each, per, shared equally, distributed, quotient, split evenly.

Always Remember: Write your final answer in a complete sentence that addresses the question asked.

Effective Teaching: Use multiple representations, encourage mathematical discourse, and connect to real-world applications.