Using bar models to subtract

Maths

Combine parts using the addition symbol

Understand that parts can be represented in any order

Understand the use of the equals sign in equations

Understanding part-part-whole relationships

Add parts to find the value of the whole and write the equation

Find the missing part in an equation

Partition a whole into two parts and write as a subtraction equation

Understand the relationship between addition and subtraction

Understand addition as increasing a quantity

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.

In this unit pupils will combine 2 or more parts to make a whole. They will learn addends can be represented in any order and that the = sign shows the whole and 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 = {{  }} 

Using bar models to subtract

Lesson outcome