To separate or take away one number from another, or to decrease an amount.

Using bar models to subtract

Maths

In this unit pupils will combine 2 or more parts to make a whole. They will learn addends are represented in any order and the = sign shows the whole and sum of the parts are equal. In the future unit pupils will find missing addends. They will partition a whole into 2 parts representing first, then, now stories with subtraction equations. They will learn + and - are inverse operations.

In prior learning, pupils will have learnt to count confidently and have developed a deep understanding of the numbers to 10, the relationships between them and the patterns within those numbers. In this unit pupils will combine two parts to make a whole, learn that addends are represented in any order and learn that the equals sign shows that the whole and the sum of the parts are equal.

Additive structures: addition

Tick the equation that represents this bar model. 

Which bar model cannot represent this equation?   7 – 3 = 4 

Tick the subtraction equations that match the bar model.

There are 10 apples. 3 of them are red. How many are not red? 

There are 7 apples. 3 of them are red. How many are not red?

There are 10 apples. 7 of them are green. How many are not green?  

Which story could be represented by this bar model? 

Look at the equation 8 – 2 = 6   Which number represents the part to be subtracted from the whole? 

Match the word to the correct description for 10 - 3 = 7.

 Tick the equation that correctly matches the picture. 

Which picture matches this equation?  10 – 3 = 7

Jun has written an equation to represent the picture 5 - 1 = 4    Is the equation correct or incorrect?

Complete the equation   9 – 5 = {{  }} 

This lesson will soon be taken down.

Using bar models to subtract

Lesson outcome