Use the additive relationship to rearrange addition equations

Maths

In this unit pupils will accurately and efficiently solve multi-step addition and subtraction problems. They will understand and explain how both addition and subtraction equations can be used to describe the same additive relationship In the future unit pupils will identify the addends and the sum in column addition They will use their knowledge of place value to correctly lay out column addition

In the prior unit pupils reviewed and secured previous knowledge of adding 3 addends, understanding they could be added in any order, bridging through 10. In this unit pupils will accurately and efficiently solve multi-step addition and subtraction problems. They will understand and explain how both addition and subtraction equations can be used to describe the same additive relationship.

Understand additive relationships and apply them to rearrange equations

The minuend is the number being subtracted from.

A subtrahend is a number subtracted from another.

The difference is the result after subtracting one number from another.

Use the additive relationship to rearrange subtraction equations

Understand the relationship between addition and subtraction 

The sum is the the total when numbers are added together.

Identify knowns and unknowns in addition equations

Identify knowns and unknowns in subtraction equations

Rearrange means to change an equation. It could mean moving the parts or the whole or changing it from an addition into a subtraction equation.

Use the additive relationship to rearrange and solve equations

A bar chart uses rectangular bars to show different values.

A pictogram uses pictures to show information.

A table has information arranged in rows and columns.

Solve problems using bar charts, pictograms and tables

Reorder means arrange something in a different way.

Understand why the order of addition and subtraction steps can be chosen

Working efficiently means finding a way to solve a problem quickly whilst also maintaining accuracy.

Understand additive relationships and apply them to rearrange equations

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Some of these lessons will soon be taken down.