An unknown is a quantity that has a set value but it is represented by a symbol or letter.

An equation is used to show that one number, calculation or expression is equal to another.

An expression contains one or more values, where each value is separated by an operator.

Explain how to balance equations with addition expressions

Maths

Explain how to balance equations with subtraction expressions

Explain how to balance equations with addition or subtraction expressions

Explain how to balance equations with addition and subtraction expressions

Use knowledge of balancing equations to solve problems

In this unit pupils will explain how to balance equations with addition or subtraction expressions and use their knowledge of balancing equations to solve problems. In the future unit pupils will compare and represent the structure of problems with two unknowns using a bar model. They will systematically solve problems with two unknowns using trial and improvement.

In the prior unit pupils explained how increasing or decreasing the minuend affected the difference. They used known facts to explain how adjusting the minuend made mental calculation easier. In this unit pupils will explain how to balance equations with addition or subtraction expressions and use their knowledge of balancing equations to solve problems.

In this unit pupils will explain how to balance equations with addition or subtraction expressions and use their knowledge of balancing equations to solve problems.

Calculating using knowledge of equivalence in addition and subtraction

The perimeter is the distance around a 2D shape.

Area is the measurement of a flat surface. It measures 2D space.

An equation is used to show that one number, calculation or express is equal to another.

An expression contains one or more terms or numbers, where each term or number is separated by and operator but an expression does not have an equals sign.

An expression contains one or more terms or numbers, where each term or number is separated by an operator but an expression does not have an equals sign.

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

Calculating using knowledge of equivalence in addition and subtraction

Choose a lesson (5)