A straight line of numbers, objects etc, arranged horizontally.

A repeated arrangement of numbers, colours or shapes which are related to each other in some way or linked by a certain rule.

A set of 10 numbers, all beginning with the same number of tens, e.g. 20,21…29.

Counting patterns within a decade

Maths

Crossing the tens boundary counting forwards

Crossing the tens boundary counting backwards

Crossing the tens boundary counting forwards and backwards

Find missing numbers between 20  and 100

In this unit pupils will extend their learning by counting to 100. They will explore the pattern in counting and focus on the end of the decade and the start of the new decade numbers.  In the future unit pupils will explore the counting sequence for counting to 100 and beyond and represent the numbers from 20-99 in different ways, including marking the position on a number line.

In prior learning, pupils will have verbally counted beyond 20, recognising the pattern of the counting system. In this unit pupils will extend their learning by counting to 100 and exploring the pattern in counting.

In this unit pupils will extend their learning by counting to 100. They will explore the pattern in counting and focus on the end of the decade and the start of the new decade numbers.¬†

Pattern in counting from 20 to 100

This is where the pattern of counting changes at the start of the number to show a new decade has started.

This is a multiple of 10 which marks the tens boundary where the pattern of counting changes.

The point at which the counting moves from one decade into another.

This is a multiple of ten which mark the tens boundary where the pattern of counting changes.

When you count forwards the number become greater.

When you count backwards the number become less.

A number that is after another comes later when you count.

A number that is before another comes earlier when you count.

A number that is between two others is in the space that separates them.

Help using Oak

Year 1

Year 2

Year 3

Year 4

Year 5

Year 6

Primary

Year 7

Year 8

Year 9

Year 10

Year 11

Secondary

Who we are

Meet the team

Oak's curricula

Get involved

Contact us

About us

AI experiments

Plan a lesson

Blogs

Webinars

Help

Guidance

Art and design

Computing

Cooking and nutrition

Design and technology

English

Geography

History

Music

Physical education

Religious education

RSHE (PSHE)

Science

Digital literacy

Financial education

Rule of law

French

Spanish

Expressive arts and design

Literacy

Personal, social and emotional development

Understanding the world

EYFS

Keystages

Citizenship

German

Biology

Chemistry

Citizenship (Core)

Citizenship (GCSE)

Combined science

Computer Science (GCSE)

Computing (Core)

Physical education (Core)

Physical education (GCSE)

Physics

Religious education (Core)

Religious education (GCSE)

Edexcel

Eduqas

Edexcel B

Foundation

Higher

Choose exam board for KS4 Biology

Choose exam board for KS4 Chemistry

Choose exam board for KS4 Combined science

Choose exam board for KS4 Computer Science (GCSE)

Choose exam board for KS4 English

Choose exam board for KS4 French

Choose exam board for KS4 Geography

Choose exam board for KS4 German

Choose exam board for KS4 History

Choose tier for KS4 Maths

Choose exam board for KS4 Music

Choose exam board for KS4 Physical education (GCSE)

Choose exam board for KS4 Physics

Choose exam board for KS4 Religious education (GCSE)

Choose exam board for KS4 Spanish

Pattern in counting from 20 to 100

Choose a lesson (5)