Year 1

Addition and subtraction within 20

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Lessons (10)

To add by counting on using a number line
In this lesson, we will learn how to use 'first, then, now' stories to add by counting on, using a number line.
1 Slide deck
1 Worksheet
1 Quiz
1 Video
To subtract by counting back using a number line
In this lesson, we will learn how to use 'first, then, now' stories to subtract by counting back, using a number line.
1 Slide deck
1 Worksheet
2 Quizzes
1 Video
To add a 1-digit number to a teens number using a known fact
In this lesson, we will learn how we can add a teens number using known number bonds.
1 Slide deck
1 Worksheet
2 Quizzes
1 Video
To subtract a 1-digit number from a teens number using a known fact
In this lesson, we will learn how we can subtract from a teens number using known number bonds.
1 Slide deck
1 Worksheet
2 Quizzes
1 Video
To use the 'Make ten' strategy to add two 1-digit numbers (Part 1)
In this lesson, we will identify expressions that are less than, equal to and greater than 10 and then apply the 'Make ten' strategy to add numbers.
1 Slide deck
1 Worksheet
1 Quiz
1 Video
To use the 'Make ten' strategy to add two 1-digit numbers (Part 2)
In this lesson, we will practise using the 'Make ten' strategy to solve addition equations.
1 Slide deck
1 Worksheet
1 Quiz
1 Video
To use the 'Make ten' strategy to subtract a 1-digit number from a teen number (Part 1)
In this lesson, we will connect the 'Make ten' strategy to subtraction and apply it to subtraction equations.
1 Slide deck
1 Worksheet
1 Quiz
1 Video
To use the 'Make ten' strategy to subtract a 1-digit number from a teen number (Part 2)
In this lesson, we will practise using the 'Make ten' strategy to solve subtraction equations.
1 Slide deck
1 Worksheet
1 Quiz
1 Video
To use mathematical models and strategies for addition
In this lesson, we will explore mathematical problems in context and consider different solutions.
1 Slide deck
1 Worksheet
1 Quiz
1 Video
To use mathematical models and strategies for subtraction
In this lesson, we will explore mathematical problems in context and consider different solutions.
1 Slide deck
1 Worksheet
1 Video

Addition and subtraction within 20

Switch to our new maths teaching resources

Lessons (10)

To add by counting on using a number line

To subtract by counting back using a number line

To add a 1-digit number to a teens number using a known fact

To subtract a 1-digit number from a teens number using a known fact

To use the 'Make ten' strategy to add two 1-digit numbers (Part 1)

To use the 'Make ten' strategy to add two 1-digit numbers (Part 2)

To use the 'Make ten' strategy to subtract a 1-digit number from a teen number (Part 1)

To use the 'Make ten' strategy to subtract a 1-digit number from a teen number (Part 2)

To use mathematical models and strategies for addition

To use mathematical models and strategies for subtraction