Introduction to Subtraction – Year 1

Give Year 1 learners a clear introduction to subtraction as taking away and finding a missing part. This coordinated unit combines explicit teaching, visual models, guided examples, independent practice and assessment in one consistent resource set.

Students cross out objects, use part-part-whole models, count back, connect addition and subtraction fact families, solve school-fair word problems and explain their strategies. Teachers can use the complete resource as a multi-lesson sequence or select individual pages for maths groups, revision, intervention, tutoring or home learning.

What's included

• Editable PowerPoint presentation: Introduction to Subtraction (15 slides)
• Editable PowerPoint quiz: Subtraction Quiz (22 slides, including 10 questions, answer slides and a closing slide)
• 20-page A4 unit plan PDF
• Classroom Display: Subtraction Means Take Away
• Student Reference Card: Subtraction Strategies
• Game: Race Back to Zero
• Activity: Subtraction Story Match
• Worksheet 1: Cross Out and Subtract
• Worksheet 2: Show the Parts
• Worksheet 3: Count Back
• Worksheet 4: Fact Family Windows
• Worksheet 5: School Fair Stories
• Worksheet 6: Missing Part Detectives
• Assessment: Subtraction at the School Fair
• Answer pages for all six worksheets and the assessment
• Rubric: Introduction to Subtraction Rubric

Learning focus

• Subtraction as taking away and finding a missing part
• Subtraction within 20
• Pictorial and number-sentence representations
• Part-part-whole models
• Counting back
• Related addition facts and fact families
• Simple subtraction word problems
• Explaining and checking mathematical thinking

Classroom use

Use the presentation for explicit teaching and guided practice, the display and reference card for strategy reminders, the game and matching activity for collaborative practice, the six worksheets for differentiated consolidation, and the assessment, answers and rubric for checking understanding.

Product details

Year level: Year 1 / Grade 1

Subject: Mathematics

Topic: Introduction to subtraction within 20

File formats: PDF and editable PPTX

Printable page count: 20 A4 pages

Presentation: 15 slides

Quiz: 22 slides

Answer key: Included — seven printable answer pages plus quiz answer slides

Teacher benefits

• Coordinated teaching, practice and assessment resources
• Editable presentation and quiz files
• Six clearly sequenced practice worksheets
• Included answers and marking rubric
• Flexible use across whole-class teaching, groups and independent work

Digital product and terms

This is a digital product. No physical item will be shipped. The files are for the purchaser's own classroom, tutoring or personal teaching use. Do not resell, redistribute, post publicly or share the files outside the licensed teaching setting.