# Within 20 (A&S)

January 5, 2022

## Year 1 Addition and Subtraction within 20 – Add by Counting on – Lesson 1

This resource introduces students to adding past 10 by counting on. Different representations are used for demonstration, including pictures, tens […]
January 5, 2022

## Year 1 Addition and Subtraction within 20 – Find and Make Number Bonds – Lesson 2

This resource teaches students to develop their knowledge of number bonds to include number bonds to 20. They will use […]
January 5, 2022

## Year 1 Addition and Subtraction within 20 – Add by Making 10 – Lesson 3

This resource teaches children to use their number bonds to 10 to help with sums within 20. Students will be […]
January 5, 2022

## Year 1 Addition and Subtraction within 20 – Subtraction, not Crossing 10 – Lesson 4

This resource teaches children to use the subtraction symbol within 20, without crossing 10. The use of 0 is also […]
January 5, 2022

## Year 1 Addition and Subtraction within 20 – Subtraction, Crossing 10 (pt 1) – Lesson 5

This resource teaches children to subtract numbers within 20 whilst crossing ten. They are taught to partition the subtrahend to […]
January 5, 2022

## Year 1 Addition and Subtraction within 20 – Subtraction, Crossing 10 (pt 2) – Lesson 6

This resource continues from the last lesson by developing children's understanding of different subtraction questions and how to tackle them. […]
January 5, 2022

## Year 1 Addition and Subtraction within 20 – Related Facts – Lesson 7

This resource introduces the concept of addition and subtraction being inverse operations. Tens frames, number bond diagrams and bar models […]
January 5, 2022

## Year 1 Addition and Subtraction within 20 – Compare Number Sentences – Lesson 8

This resource introduces comparison within addition and subtraction, using more than, less than and equal to (and the accompanying symbols […]