An introductory worksheet on addition and subtraction within 10 and 20. The students are required to use their knowledge on addition within 10 to perform calculations with numbers within 10 and 20. There are three pages of exercises. Solutions are included.

Engage your Key Stage 1 students with this no-prep maths worksheet designed to build strong addition and subtraction fact fluency! This high-quality practice packet helps young learners master maths facts within 10 and 20 by using a smart, scaffolded building-block method. Perfect for morning work, daily maths starters, homework, or small group intervention!

What is Included in This Resource?
This resource features carefully designed layouts that naturally guide students toward mental maths mastery, complete with a step-by-step visual solution key for every question:

• Section A: Addition Connections (12 Questions): Helps students bridge small facts to larger facts. Students solve a basic single-digit calculation (like 3 + 2 = 5) and immediately use that knowledge to tackle a related double-digit calculation (like 13 + 2 = 15).
• Section B: Subtraction & Fact Families (10 Multi-Part Questions): Extends student thinking by linking simple subtraction (like 5 - 2 = 3) directly to matching questions within twenty (like 15 - 2 = 13 and 15 - 3 = 12).
• Section C: Mixed Fact Fluency Challenge (20 Questions): A comprehensive review mix of standalone addition and subtraction questions to test overall mastery within 20.

Why Teachers Love This Resource

• No Prep Required: Just print the pages and you are ready to teach!
• Scaffolded Learning: The unique side-by-side columns show kids how numbers work, helping them recognize patterns rather than just guessing.
• Full Answer Keys Included: Comes with a beautifully clear, completed visual layout so you can mark in seconds or allow students to self-correct.

Target Key Stages & Curriculum Standards
This worksheet is perfect for Early Years (EYFS Advanced), Key Stage 1 (Year 1 and Year 2), and Lower Key Stage 2 (Year 3 Intervention) National Curriculum Aligned:

• Year 1 Mathematics: Add and subtract one-digit and two-digit numbers to 20, including zero; represent and use number bonds and related subtraction facts within 20.
• Year 2 Mathematics: Recall and use addition and subtraction facts to 20 fluently, and derive and use related facts up to 100.