Year 6 Missing Number Problems – Differentiated Addition and Subtraction Worksheets with Answers

🔢 Build confidence with missing-number calculations

Help pupils strengthen their understanding of addition, subtraction and inverse operations with this differentiated set of Year 6 missing-number worksheets.

Learners must find the unknown value in a range of addition and subtraction number sentences. The missing number appears in different positions, encouraging pupils to think carefully about the relationship between the numbers rather than simply applying one repeated method.

📚 What is included?

• 3 differentiated pupil worksheets

• Triangle: lower-ability level

• Circle: middle-ability level

• Square: higher-ability level

• 20 questions on each worksheet

• 60 questions in total

• 3 corresponding answer pages

• 6 A4 pages in total

• 1 downloadable digital PDF

• QR code linking to an external support video

✏️ Skills covered

• Finding missing numbers in addition calculations

• Finding missing numbers in subtraction calculations

• Identifying missing addends

• Finding missing minuends and subtrahends

• Using inverse operations

• Understanding equivalent number sentences

• Working accurately with four-digit whole numbers

• Developing arithmetic fluency and mathematical reasoning

📈 Differentiation and learning progression

The Triangle worksheet introduces the work in a more structured sequence, beginning with addition questions before moving to subtraction.

The Circle and Square worksheets mix addition and subtraction more regularly and present the unknown in different positions within the number sentence. This encourages greater independence when selecting and applying an appropriate inverse operation.

The calculations primarily use four-digit whole numbers. One Triangle question produces a five-digit missing number, extending the range slightly.

🎯 Curriculum and assessment relevance

This resource develops important upper-primary addition and subtraction skills and is suitable for Year 6 maths or math practice.

The questions support foundational arithmetic and reasoning skills used in assessments such as SATs and NAPLAN. This resource is not officially endorsed by, affiliated with or aligned to either assessment programme.

🏫 Suggested uses

• Classroom maths practice

• Independent work

• Weekly homework

• Arithmetic revision

• Intervention activities

• Extension and consolidation

• Tutoring

• Home education

• Assessment preparation

• Early-finisher activities

👩‍🏫 Suitable for

• Year 6 pupils

• Upper-primary learners

• Elementary students working at an equivalent level

• Teachers and teaching assistants

• Tutors

• Home-educating families

• Learners needing differentiated addition and subtraction practice

🎥 External video support

Each worksheet includes a QR code linking to an external support video. Internet access is required. The video is not created or owned by the worksheet author, and copyright remains with the original creator. Continued availability is controlled by the external creator and hosting platform.

📄 Product details

• Subject: Maths / Math

• Topic: Missing Number Problems

• Operations: Addition and subtraction

• Year group: Year 6

• Format: Digital PDF

• Page size: A4

• Pupil worksheets: 3

• Answer pages: 3

• Total questions: 60

• Total pages: 6

• Differentiation: Triangle, Circle and Square levels

• Answer key included: Yes

This is a digital download. No physical item will be supplied.