Year 3 Adding Multiples of 10 Worksheets (3 Differentiated Sheets with Answers) – KS2 Mental Maths Practice

£1.00

This Year 3 Adding Multiples of 10 worksheet set helps pupils practise adding tens and larger multiples of 10 to 3-digit numbers using mental maths strategies.

The resource includes three differentiated worksheets designed for different ability levels, making it ideal for classroom teaching, homework, or independent practice.

Children are encouraged to partition numbers to support mental addition, helping develop strong place value understanding and confidence with number manipulation.

Each worksheet contains 18 carefully structured questions that gradually increase in difficulty.

Differentiation included:

Triangles (Support Level)
Adding 10, 20 and 30 to three-digit numbers.

Circles (Middle Ability)
Adding multiples of 10 up to 90 to larger three-digit numbers.

Squares (Higher Ability)
Adding larger multiples of 10 including numbers above 100, with some answers exceeding 1000.

This resource is perfect for:

  • Year 3 maths lessons

  • KS2 homework

  • Mental maths fluency practice

  • SATs preparation

  • NAPLAN-style number skills practice

  • Small group intervention

  • Independent learning tasks

The worksheets also include a QR code linking to a supporting maths video, allowing pupils to review the skill before completing the questions.

What’s Included

  • 3 differentiated worksheets (Triangles, Circles, Squares)

  • 18 questions per worksheet

  • Answer sheets included

  • Printable PDF format

  • QR code for video support

Total: 6 pages

Curriculum Links

Aligned with the UK National Curriculum (Key Stage 2):

Year 3 pupils should learn to:

  • add and subtract numbers mentally

  • add multiples of 10 and 100

  • develop fluency with place value and number partitioning.

These skills also support NAPLAN numeracy preparation and broader international primary maths standards.

This Year 3 Adding Multiples of 10 worksheet set helps pupils practise adding tens and larger multiples of 10 to 3-digit numbers using mental maths strategies.

The resource includes three differentiated worksheets designed for different ability levels, making it ideal for classroom teaching, homework, or independent practice.

Children are encouraged to partition numbers to support mental addition, helping develop strong place value understanding and confidence with number manipulation.

Each worksheet contains 18 carefully structured questions that gradually increase in difficulty.

Differentiation included:

Triangles (Support Level)
Adding 10, 20 and 30 to three-digit numbers.

Circles (Middle Ability)
Adding multiples of 10 up to 90 to larger three-digit numbers.

Squares (Higher Ability)
Adding larger multiples of 10 including numbers above 100, with some answers exceeding 1000.

This resource is perfect for:

  • Year 3 maths lessons

  • KS2 homework

  • Mental maths fluency practice

  • SATs preparation

  • NAPLAN-style number skills practice

  • Small group intervention

  • Independent learning tasks

The worksheets also include a QR code linking to a supporting maths video, allowing pupils to review the skill before completing the questions.

What’s Included

  • 3 differentiated worksheets (Triangles, Circles, Squares)

  • 18 questions per worksheet

  • Answer sheets included

  • Printable PDF format

  • QR code for video support

Total: 6 pages

Curriculum Links

Aligned with the UK National Curriculum (Key Stage 2):

Year 3 pupils should learn to:

  • add and subtract numbers mentally

  • add multiples of 10 and 100

  • develop fluency with place value and number partitioning.

These skills also support NAPLAN numeracy preparation and broader international primary maths standards.