Column addition is a way of adding numbers by writing a number below another.

Use place value to correctly lay out column addition

Maths

In this 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 future unit pupils will identify the minuend and the subtrahend in column subtraction and explain the column subtraction algorithm. They will subtract from a 2-digit number using column subtraction with exchanging.

In the prior unit pupils accurately and efficiently solved multi-step addition and subtraction problems. They understood and explained how both addition and subtraction equations could be used to describe the same additive relationship. In this 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.

Column addition

What is the value of the tens shown in this image?

What is represented by the digit 2 in 124?

Which calculation matches the base ten blocks representation? 

Which calculation matches the column addition?

Which two numbers are being added in the column addition?

What are the addends in this column addition? 

Jun represents the column addition as a bar model. Which bar model shows the correct position of 65?

Look at the column addition. Which statements are correct? 

Which equations match the column addition? 

This lesson will soon be taken down.

Use place value to correctly lay out column addition

Lesson outcome