Use the additive relationship to rearrange subtraction 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

Which number is the minuend in this equation: 55 − 20 = 35

What is the difference between 11 and 9? 

Which equations are represented by the bar model? 

Look at the bar model. What part is missing? 

Izzy writes subtraction equations represented by the bar model. Which equation is NOT correct? 

Match up the addition and subtraction equations. 

Which number in the bar model represents the whole? 

Which numbers could complete the bar model? 

This lesson will soon be taken down.

Use the additive relationship to rearrange subtraction equations

Lesson outcome