Redistribution is where part of one addend is moved to another addend. It is sometimes known as the same sum rule.

The sum is the total when numbers are added together.

The whole is all the parts or everything, the total amount.

Using redistribution with addition of integers

Maths

Using redistribution with addition of decimal fractions

Using balanced equations to calculate redistribution

Use a balanced equation to calculate unknown parts

Explain how adjusting one part affects the sum

Solve addition calculations mentally by using known facts

Solve addition calculations mentally by using known facts in a range of contexts

Solve calculations with missing parts

Use equivalence and compensation strategies to solve problems

Use equivalence and compensation strategies to solve addition problems in a range of contexts

In this unit pupils used the concept of same sum to simplify and solve addition problems. In the future unit pupils will solve calculations with missing addends and use the same difference rule to balance equations. They will explain how increasing or decreasing the minuend affects the difference.

In the prior unit pupils identified structures within stories using their knowledge of structures to create stories. They used their knowledge of additive structures to solve problems. In this unit pupils used the concept of same sum to simplify and solve addition problems

In this unit pupils used the concept of same sum to simplify and solve addition problems.

Use equivalence and compensation to simplify and solve addition calculations

A decimal fraction is a fraction written as a decimal. A decimal point separates whole numbers from decimal fractions.

A part is a piece or section of the whole.

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.

An expression contains one or more values, where each value is separated by an operator.  Two or more expressions with the same value can be separated by an equals sign to create an equation.

An adjustment is a change to a number using either subtraction or addition. This can be done to a part or a whole.

An adjustment is a change to a number using either subtraction or addition.

Capacity is the amount that something can hold.

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

Equivalence is when two or more things have the same value.

Compensation is a mental strategy which involves adjusting parts of an equation while maintaining equivalence.

A budget is the total amount of money that you have to spend on something. It is often split into parts and money can be redistributed between these parts.

When you adjust you make a change to a number.

Redistribution is where some of one part is moved to another part. It is sometimes known as the same sum rule.

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Use equivalence and compensation to simplify and solve addition calculations

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