Solving Subtraction Word Problems

Active learning helps students connect abstract subtraction concepts to concrete experiences. When learners act out problems, draw comparisons, and discuss solutions, they build a deeper understanding of how subtraction represents real-world actions. These hands-on methods make invisible processes visible and help students internalize the language and logic of subtraction.

• Grade 1
• Mathematics
• 4 activities
• 25 min–40 min

Learning Objectives

1. Identify keywords in subtraction word problems that indicate taking away or comparing quantities.
2. Construct drawings that visually represent the action described in a subtraction word problem.
3. Translate a subtraction word problem into a number sentence using symbols and numerals.
4. Explain the steps taken to solve a subtraction word problem, referencing their drawing and number sentence.

Gallery Walk

⏱ 35 min·Small Groups

Small Groups: Act-Out Stories

Provide counters or toys for groups to represent word problems physically: read the problem, act it out by removing or comparing items, then draw the subtraction expression. Groups share one solution with the class, explaining their drawing. Record key language on chart paper.

Prepare & details

Analyze how we decide if a story problem is asking us to take groups apart or compare them.

Facilitation Tip: During Act-Out Stories, circulate with a checklist to note which students hesitate to assign roles or model actions.

Setup: Wall space or tables arranged around room perimeter

Materials: Large paper/poster boards, Markers, Sticky notes for feedback

• Understand
• Apply
• Analyze
• Create
• Relationship Skills
• Social Awareness

Gallery Walk

⏱ 25 min·Pairs

Pairs: Draw-and-Talk Partners

Partners read a subtraction word problem; one draws the scenario and labels parts, the other writes the number sentence and solves. Switch roles for a second problem, then discuss why it is subtraction, not addition. Collect drawings for a class gallery.

Prepare & details

Construct a drawing that represents a subtraction word problem.

Facilitation Tip: For Draw-and-Talk Partners, provide dry-erase boards so students can erase and revise drawings as their thinking evolves.

Setup: Wall space or tables arranged around room perimeter

Materials: Large paper/poster boards, Markers, Sticky notes for feedback

• Understand
• Apply
• Analyze
• Create
• Relationship Skills
• Social Awareness

Gallery Walk

⏱ 40 min·Whole Class

Whole Class: Problem Chain

Display a word problem; students contribute drawings or symbols one by one to build a class representation on the board. Solve together, then generate similar problems as a group. Vote on the best language cues for subtraction.

Prepare & details

Differentiate between an addition and a subtraction word problem based on the language used.

Facilitation Tip: In Problem Chain, pause after each round to ask a student to restate the previous group’s solution before moving forward.

Setup: Wall space or tables arranged around room perimeter

Materials: Large paper/poster boards, Markers, Sticky notes for feedback

• Understand
• Apply
• Analyze
• Create
• Relationship Skills
• Social Awareness

Gallery Walk

⏱ 30 min·Individual

Individual: Story Creator

Each student writes a simple subtraction story, draws it, and solves with an expression. Pair up to trade and solve partner's problem, providing feedback on clarity of language and drawing.

Prepare & details

Analyze how we decide if a story problem is asking us to take groups apart or compare them.

Setup: Wall space or tables arranged around room perimeter

Materials: Large paper/poster boards, Markers, Sticky notes for feedback

• Understand
• Apply
• Analyze
• Create
• Relationship Skills
• Social Awareness

Teaching This Topic

Start with concrete objects to anchor subtraction in action. Avoid rushing to symbols before students can explain the scenario in their own words. Use think-alouds to model how to match language cues like ‘left’ or ‘difference’ to subtraction expressions. Keep examples relatable and avoid contrived scenarios that confuse more than clarify.

What to Expect

Students will confidently translate word problems into subtraction expressions and justify their choices. They will use drawings and manipulatives to model actions like taking away or comparing sets. Clear explanations during discussions show that students recognize when subtraction is needed, not just when the answer is small.

Watch Out for These Misconceptions

Common Misconception

During Act-Out Stories, watch for students who assume any problem with a smaller result must involve subtraction.

What to Teach Instead

Prompt the group to act out both possible interpretations of the same numbers using objects, then ask which action matches the story’s language like ‘gave away’ or ‘flew away’.

Common Misconception

During Draw-and-Talk Partners, watch for students who treat all instances of the word ‘more’ as clues for addition.

What to Teach Instead

Ask partners to underline the exact phrase in the problem, then sketch both a comparison and a take-away drawing to see which matches the action.

Common Misconception

During Problem Chain, watch for students who confuse take-apart and compare problems as the same type.

What to Teach Instead

Have groups build both scenarios side-by-side with counters, labeling each drawing to show whether the whole is being split or two sets are being compared.

Assessment Ideas

Exit Ticket

After Act-Out Stories, give students a problem like ‘There were 10 balloons. 4 popped. How many are left?’ Ask them to draw their solution and write the number sentence to show their understanding of the action.

Quick Check

After Draw-and-Talk Partners, display two problems on the board and ask students to circle the subtraction problem. Then have them pair-share one keyword or phrase that helped them decide.

Discussion Prompt

After Problem Chain, pose the scenario ‘Liam had 9 crayons. He lost some. Now he has 3. How many did he lose?’ Ask students to share their drawings and number sentences, then discuss how the action in the story determined their model.

Extensions & Scaffolding

• Challenge students who finish early to write a new problem that requires the opposite operation and explain how they know it is subtraction.
• For students who struggle, provide a bank of labeled drawings (e.g., apples, birds) and ask them to circle the correct model for a given problem.
• Offer extra time for students to create a mini-book of three subtraction problems with solutions, using their own drawings and number sentences.

Key Vocabulary

take away	To remove a certain number of items from a group. This is a common phrase in subtraction problems where the total decreases.
left	The amount remaining after some items have been removed or taken away. It indicates the result of a subtraction.
difference	The result when one number is subtracted from another. It tells us how much more or less one quantity is than another.
compare	To look at two or more quantities to find out how they are alike or different. In subtraction, this often means finding 'how many more' or 'how many fewer'.