KS1 Adding to 2 digit numbers Worksheets

This collection of KS1 adding to 2 digit numbers worksheets supports pupils in Year 1 and Year 2 as they develop core addition skills. The worksheets provide structured practice in adding single-digit numbers to two-digit numbers, helping children build confidence with place value and number bonds. Each worksheet includes a complete answer sheet, making marking straightforward for teachers and parents. Available as downloadable PDFs, these resources cover various approaches to addition, from using number lines and pictorial representations to written methods. The progressive difficulty ensures pupils can consolidate their understanding before moving to more challenging calculations, aligning with National Curriculum expectations for Key Stage 1 mathematics.

Adding 10 to 2 digit numbers (10 questions)

Adding 10 to 2 digit numbers (10 questions) pdf printable worksheet perfect for students in year 2

Adding 10 to 2 digit numbers (20 questions)

Adding 10 to 2 digit numbers Worksheet (20 questions) perfect for students in year 2

Adding 10 to 2 digit numbers (50 questions)

Adding 10 to 2 digit numbers Worksheet (50 questions) suitable for students in key stage 1

Adding 11 to 2 digit numbers (10 questions)

Adding 11 to 2 digit numbers (10 questions) pdf printable worksheet perfect for students in year 2

Adding 11 to 2 digit numbers (20 questions)

Adding 11 to 2 digit numbers Worksheet (20 questions) perfect for students in year 2

Adding 11 to 2 digit numbers (50 questions)

Adding 11 to 2 digit numbers Worksheet (50 questions) suitable for students in key stage 1

Adding 2 digit numbers without regrouping (10 questions)

Adding 2 digit numbers without regrouping (10 questions) pdf printable worksheet perfect for students in year 2

Adding 2 digit numbers without regrouping (20 questions)

Adding 2 digit numbers without regrouping Worksheet (20 questions) perfect for students in year 2

Adding 2 digit numbers without regrouping (50 questions)

Adding 2 digit numbers without regrouping Worksheet (50 questions) suitable for students in key stage 1

Adding 5 to 2 digit numbers (10 questions)

Adding 5 to 2 digit numbers (10 questions) pdf printable worksheet perfect for students in year 2

Adding 5 to 2 digit numbers (20 questions)

Adding 5 to 2 digit numbers Worksheet (20 questions) perfect for students in year 2

Adding 5 to 2 digit numbers (50 questions)

Adding 5 to 2 digit numbers Worksheet (50 questions) suitable for students in key stage 1

Adding 6 to 2 digit numbers (10 questions)

Adding 6 to 2 digit numbers (10 questions) pdf printable worksheet perfect for students in year 2

Adding 6 to 2 digit numbers (20 questions)

Adding 6 to 2 digit numbers Worksheet (20 questions) perfect for students in year 2

Adding 6 to 2 digit numbers (50 questions)

Adding 6 to 2 digit numbers Worksheet (50 questions) suitable for students in key stage 1

Adding 7 to 2 digit numbers (10 questions)

Adding 7 to 2 digit numbers (10 questions) pdf printable worksheet perfect for students in year 2

Adding 7 to 2 digit numbers (20 questions)

Adding 7 to 2 digit numbers Worksheet (20 questions) perfect for students in year 2

Adding 7 to 2 digit numbers (50 questions)

Adding 7 to 2 digit numbers Worksheet (50 questions) suitable for students in key stage 1

Adding 8 to 2 digit numbers (10 questions)

Adding 8 to 2 digit numbers (10 questions) pdf printable worksheet perfect for students in year 2

Adding 8 to 2 digit numbers (20 questions)

Adding 8 to 2 digit numbers Worksheet (20 questions) perfect for students in year 2

Adding 8 to 2 digit numbers (50 questions)

Adding 8 to 2 digit numbers Worksheet (50 questions) suitable for students in key stage 1

Adding 9 to 2 digit numbers (10 questions)

Adding 9 to 2 digit numbers (10 questions) pdf printable worksheet perfect for students in year 2

Adding 9 to 2 digit numbers (20 questions)

Adding 9 to 2 digit numbers Worksheet (20 questions) perfect for students in year 2

Adding 9 to 2 digit numbers (50 questions)

Adding 9 to 2 digit numbers Worksheet (50 questions) suitable for students in key stage 1

Adding mulitples of 10 to a 2 digit number (10 questions)

Adding mulitples of 10 to a 2 digit number (10 questions) pdf printable worksheet perfect for students in year 2

Adding mulitples of 10 to a 2 digit number (20 questions)

Adding mulitples of 10 to a 2 digit number Worksheet (20 questions) perfect for students in year 2

Adding mulitples of 10 to a 2 digit number (50 questions)

Adding mulitples of 10 to a 2 digit number Worksheet (50 questions) suitable for students in key stage 1

Adding mulitples of 5 to a 2 digit number (10 questions)

Adding mulitples of 5 to a 2 digit number (10 questions) pdf printable worksheet perfect for students in year 2

Adding mulitples of 5 to a 2 digit number (20 questions)

Adding mulitples of 5 to a 2 digit number Worksheet (20 questions) perfect for students in year 2

Adding mulitples of 5 to a 2 digit number (50 questions)

Adding mulitples of 5 to a 2 digit number Worksheet (50 questions) suitable for students in key stage 1

Adding Single Digits to Two Digit Numbers (No Regrouping)

Adding Single Digits to Two Digit Numbers (No Regrouping) Worksheet for Year 2

Adding Single Digits to Two Digit Numbers (With Regrouping)

Adding Single Digits to Two Digit Numbers (With Regrouping) Worksheet for Year 2

Addition by partitioning (A)

Addition by partitioning (A) pdf printable worksheet perfect for students in year 2

Addition by partitioning (B)

Addition by partitioning (B) Worksheet perfect for students in year 2

Addition Colouring (C)

Addition Colouring pdf printable worksheet perfect for students in year 2

Addition Colouring (D)

Addition Colouring Worksheet perfect for students in year 2

Addition Grids (2 digits)

Addition Grids Worksheet (2 digits) suitable for students in key stage 1

Addition Grids (Adding Single Digits to Multiples of 10)

Addition Grids (Adding Single Digits to Multiples of 10) Worksheet Suitable for Year 2 Students

Addition Grids (Mulitples of 5)

Addition Grids Worksheet (Mulitples of 5) perfect for students in year 2

Addition Grids (Multipes of 10)

Addition Grids (Multipes of 10) pdf printable worksheet perfect for students in year 2

Addition Grids (Up to 15)

Addition Grids (Up to 15) Worksheet perfect for students in year 1

Addition Using Dice (A)

Addition Using Dice pdf printable worksheet perfect for students in year 2

Addition Using Dice (B)

Addition Using Dice Worksheet perfect for students in year 2

Addition Using Dice (C)

Addition Using Dice Worksheet perfect for students in year 2

Addition Using Dice (D)

Addition Using Dice Worksheet suitable for students in key stage 1

Addition Using Dice (E)

Addition Using Dice Worksheet suitable for students in key stage 2

Addition Wheel (adding 9 - 11 to 2 digits)

Addition Wheel (adding 9 - 11 to 2 digits) pdf printable worksheet perfect for students in year 2

Addition Wheels (1 digit to 2 digits)

Addition Wheels Worksheet (1 digit to 2 digits) suitable for students in key stage 1

Addition Wheels (adding 10 to 2 digits)

Addition Wheels Worksheet (adding 10 to 2 digits) perfect for students in year 2

Addition Wheels (adding multiples of 10 to 2 digits)

Addition Wheels Worksheet (adding multiples of 10 to 2 digits) suitable for students in key stage 1

Addition wheels (multiples of 5 to 2 digits)

Addition wheels (multiples of 5 to 2 digits) pdf printable worksheet perfect for students in year 2

Emoji Colour by Numbers - Addition and Subtraction

Emoji Colour by Numbers - Addition and Subtraction Worksheet Suitable for Year 2 Students

Matching Answers (C)

Matching Answers (C) Worksheet suitable for students in key stage 1

Matching sums (Up to 15)

Matching sums Worksheet (Up to 11-15) perfect for students in year 1

All worksheets are created by the team of experienced teachers at Cazoom Maths.

What do KS1 add two-digit numbers worksheets cover?

KS1 worksheets for adding to two-digit numbers focus on developing children's understanding of addition within 100. Pupils practise adding single-digit numbers to two-digit numbers, such as 23 + 5 or 47 + 8, which builds essential skills in place value and mental calculation strategies. The worksheets introduce various methods including counting on, using number lines, partitioning, and column addition, allowing children to find approaches that suit their learning style.

Which year groups use adding to 2 digit numbers worksheets?

These adding to 2 digit numbers worksheets are designed specifically for Year 1 and Year 2 pupils studying Key Stage 1 mathematics. In Year 1, children typically begin by adding single-digit numbers to two-digit numbers without crossing the tens boundary, such as 34 + 5. As they progress through Year 1 and into Year 2, they tackle calculations that require regrouping, such as 38 + 7, developing their understanding of place value.

How do number lines help with adding to 2 digit numbers?

Number lines are an effective visual tool that helps KS1 pupils understand the process of adding to two-digit numbers. By starting at the two-digit number and counting on the single-digit addend in jumps, children can see how addition increases value and moves along the number sequence. This method is particularly useful for children who need concrete representations before moving to abstract calculations, and it supports their understanding of place value.

Do the worksheets include answer sheets?

Yes, every worksheet in this collection includes a complete answer sheet. This feature saves considerable time for teachers and parents, allowing them to mark work quickly and provide immediate feedback to pupils. The answer sheets show all solutions clearly, making it easy to identify where children might need additional support or clarification on particular types of calculations.