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

The process of unitising and exchanging between place values is known as regrouping.

Use column addition with regrouping in ones and tens

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

Where will regrouping be needed in this column addition? 


Jun has started this column addition. Complete it to find the sum. 

The same digit is missing from both boxes. What is the number? 

What number is missing from this column addition? 

What tens digit is missing from this column addition?  

Starter Quiz