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Year 1 Addition & Subtraction Worksheets

25 worksheets across 5 weeks

Our free Year 1 Addition and Subtraction worksheets provide a carefully structured, progressive approach to building the essential number skills that children aged 5-6 need as part of the England National Curriculum. Addition and subtraction form the backbone of Key Stage 1 mathematics, and a secure understanding of these operations is vital for every area of maths that follows. These worksheets give children the daily practice they need to develop both speed and confidence with numbers to 20. The 25 worksheets are organised into 5 weeks of daily practice, with each week targeting a specific skill area. Week 1 covers addition to 10, Week 2 focuses on subtraction to 10, Week 3 extends to addition to 20, Week 4 tackles subtraction to 20, and Week 5 brings everything together with mixed addition and subtraction to 20. This careful sequencing ensures that children consolidate each skill before progressing to the next challenge. Every worksheet follows our proven three-section format: fluency questions to build speed and accuracy, word problems that place calculations in real-life contexts, and reasoning challenges that encourage children to explain their mathematical thinking. This structure directly reflects the three aims of the National Curriculum for mathematics and prepares children for the types of questions they will encounter throughout Key Stage 1. Parents can use these worksheets as a daily 10 to 15 minute practice session at home, whether as a morning warm-up before school or as a focused homework activity. Teachers will find them ideal as morning starters, independent practice tasks, or targeted intervention resources. The progressive weekly structure means you can easily identify the point at which a child needs additional support, making these worksheets a practical diagnostic tool as well as a practice resource. Through regular use of these worksheets, children will develop fluent recall of addition and subtraction facts, the ability to solve problems using concrete and pictorial representations, and the confidence to explain their reasoning. These are the foundational skills that will support their mathematical learning for years to come.

Addition to 10

Week 1

Subtraction to 10

Week 2

Addition to 20

Week 3

Subtraction to 20

Week 4

Addition & Subtraction to 20

Week 5

Frequently Asked Questions

What addition and subtraction skills should a Year 1 child know?
By the end of Year 1, children should be able to add and subtract one-digit and two-digit numbers to 20, including zero. They should be able to read, write, and interpret mathematical statements involving addition (+), subtraction (-), and equals (=) signs.
How many worksheets are in the Year 1 Addition & Subtraction pack?
There are 25 worksheets in total, organised into 5 weeks of 5 days each. Topics progress from addition to 10, subtraction to 10, addition to 20, subtraction to 20, and mixed operations to 20.
Are these worksheets aligned to the UK national curriculum?
Yes, all worksheets are fully aligned to the Year 1 national curriculum for England. They cover the Number: Addition and Subtraction objectives specified in the programmes of study.
How do I help my child with addition and subtraction at home?
Start with practical, hands-on activities using objects your child can count, such as buttons, building bricks, or pieces of pasta. Encourage your child to use their fingers or draw pictures when working through calculations. Sit with them while they complete each worksheet and ask them to explain how they reached their answer. Praise effort rather than just correct answers, and if your child finds a question tricky, go back to a simpler example before trying again. Short daily sessions of 10 to 15 minutes are far more effective than longer, less frequent practice.
What addition and subtraction skills are tested in the KS1 SATs?
The Key Stage 1 SATs assess children's ability to add and subtract numbers within 20 and beyond, solve one-step and two-step word problems, use number bonds, and explain their reasoning. Questions may involve missing number problems (for example, 7 + ? = 13), comparing additions and subtractions, and interpreting calculations in real-world contexts. Our worksheets prepare children for all of these question types through the fluency, word problem, and reasoning sections included in every daily worksheet.
How many questions are in each worksheet?
Each worksheet contains between 8 and 12 questions across three sections: fluency practice, word problems, and reasoning challenges. The number of questions is carefully chosen so that children can complete each worksheet in approximately 10 to 15 minutes, maintaining focus and building confidence without becoming overwhelmed.
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