Addition and Subtraction Word Problems

Students learn best when they see math as a tool for solving real questions. These activities place two-digit addition and subtraction word problems into hands-on stations and stories so children practice deciding when to add or subtract without getting lost in abstract steps.

• 2nd Class
• Mathematical Explorers: Building Foundations
• 4 activities
• 20 min–45 min

Learning Objectives

1. Identify key words within word problems that indicate addition or subtraction.
2. Formulate a numerical expression to represent a given addition or subtraction word problem.
3. Calculate the solution to two-digit addition and subtraction word problems without renaming.
4. Create a simple word problem involving two-digit addition or subtraction without renaming.

Stations Rotation

⏱ 45 min·Small Groups

Stations Rotation: Word Problem Stations

Prepare four stations with word problems on cards: two addition, two subtraction. Students read the problem, draw pictures or use counters to model it, write a number sentence, and solve. Rotate every 10 minutes, then share one solution as a class.

Prepare & details

What key words in a problem tell you whether to add or subtract?

Facilitation Tip: During Word Problem Stations, circulate with a clipboard and call out keywords you hear students using to decide operations.

Setup: Tables/desks arranged in 4-6 distinct stations around room

Materials: Station instruction cards, Different materials per station, Rotation timer

• Remember
• Understand
• Apply
• Analyze
• Self-Management
• Relationship Skills

Role Play

⏱ 30 min·Pairs

Partner Story Creation

Pairs brainstorm real-life scenarios using classroom objects, like books or pencils. One writes an addition problem, the partner solves it and creates a subtraction follow-up. Switch roles and check each other's work with teacher prompts.

Prepare & details

How can you write a number sentence to solve a real-life problem?

Facilitation Tip: When pairs create stories, provide blank cards and remind them to include two two-digit numbers before solving.

Setup: Open space or rearranged desks for scenario staging

Materials: Character cards with backstory and goals, Scenario briefing sheet

• Apply
• Analyze
• Evaluate
• Social Awareness
• Self-Awareness

Role Play

⏱ 20 min·Whole Class

Whole Class Problem Chain

Display a word problem on the board. Students suggest key words and operations aloud. Teacher records the number sentence; class solves together using fingers or number lines. Chain to a new related problem based on class input.

Prepare & details

Can you create and solve your own addition or subtraction story problem?

Facilitation Tip: For the Whole Class Problem Chain, pause after each step to ask a volunteer to restate the next operation in their own words.

Setup: Open space or rearranged desks for scenario staging

Materials: Character cards with backstory and goals, Scenario briefing sheet

• Apply
• Analyze
• Evaluate
• Social Awareness
• Self-Awareness

Role Play

⏱ 25 min·Individual

Individual Problem Hunt

Hide word problem cards around the room with two-digit numbers. Students find one, solve independently with a recording sheet, then justify their operation choice to a partner before submitting.

Prepare & details

What key words in a problem tell you whether to add or subtract?

Facilitation Tip: For Individual Problem Hunt, give colored pencils so students can underline key words before writing their sentences.

Setup: Open space or rearranged desks for scenario staging

Materials: Character cards with backstory and goals, Scenario briefing sheet

• Apply
• Analyze
• Evaluate
• Social Awareness
• Self-Awareness

Teaching This Topic

Start with concrete objects they can manipulate—tens and units blocks or stacks of books—so they see the difference between joining and removing sets. Move to written stories only after they can explain the action aloud. Avoid letting students rush to compute; insist on a visible number sentence first. Research shows that drawing quick sketches of the problem boosts accuracy more than circling words alone.

What to Expect

By the end of the activities, students should confidently circle key words, write correct number sentences for two-digit problems, and explain in their own words why they chose addition or subtraction. Their work should show clear steps from the story to the math sentence.

Watch Out for These Misconceptions

Common Misconception

During Word Problem Stations, watch for students who always add numbers without checking the action described.

What to Teach Instead

Ask them to act out the problem with manipulatives first, then verbalize whether they are joining or removing sets before writing any numbers.

Common Misconception

During Partner Story Creation, watch for students who skip writing a number sentence and just guess the answer.

What to Teach Instead

Prompt partners to read their story aloud while pointing to the numbers they chose, then insist they write the sentence together before solving.

Common Misconception

During Whole Class Problem Chain, watch for students who treat two-digit numbers as single digits placed side by side.

What to Teach Instead

Pause and have students model the number with tens and units blocks before they decide the operation, normalising the two-digit structure in context.

Assessment Ideas

Exit Ticket

After Individual Problem Hunt, give each student a card with a short word problem. Ask them to write the number sentence used to solve it and the final answer.

Quick Check

During Word Problem Stations, present two word problems on the board, one clearly indicating addition and one subtraction. Ask students to hold up a green card if they think it's addition, or a red card if they think it's subtraction, before solving.

Discussion Prompt

During Partner Story Creation, pose the question: 'What are some words you see in a story problem that tell you to add?' Have students share their ideas and write them on the board. Then ask: 'What words tell you to subtract?' Collect common words on a class anchor chart.

Extensions & Scaffolding

• Challenge students finishing early to invent a two-step word problem using three two-digit numbers and trade with a partner.
• Scaffolding for struggling students: Provide sentence starters like 'There were ___ apples. ___ were eaten. Now there are ___.' with blanks filled in partially by the teacher.
• Deeper exploration: Have students write a reflective paragraph after solving several problems, explaining how they knew whether to add or subtract and what they would do differently next time.

Key Vocabulary

altogether	A word that signals you need to combine quantities, meaning to add them.
take away	A phrase that indicates some quantity is being removed, meaning to subtract.
difference	The result when one number is subtracted from another, often asked for in comparison problems.
number sentence	A mathematical sentence that uses numbers and symbols to show a relationship, like an equation.