About cookies

The NCETM site uses cookies. Read more about our privacy policy

Please agree to accept our cookies. If you continue to use the site, we'll assume you're happy to accept them.

 

Personal Learning Login






Sign Up | Forgotten password?
 
Register with the NCETM

1.20 Algorithms: column addition


Created on 09 August 2018 by ncetm_administrator
Updated on 09 August 2018 by ncetm_administrator

Introduction

Introduce children to the column algorithm for addition calculations, applying the algorithm to a variety of aggregation and augmentation contexts for two-digit and three-digit numbers; explore regrouping (column total is ten or greater) in detail.

Teaching points

  • Teaching point 1: Any numbers can be added together using an algorithm called ‘column addition’.
     
  • Teaching point 2: The digits of the addends must be aligned correctly before the algorithm is applied.
     
  • Teaching point 3: In column addition, the digits of the addends are added working from the least significant digit (on the right) to the most significant digit (on the left).
     
  • Teaching point 4: If any column sums to ten or greater, we must ‘regroup’.
     
  • Teaching point 5: The numbers within each column should be added in the most efficient order.
     

 

 

Comment on this item  
 
Add to your NCETM favourites
Remove from your NCETM favourites
Add a note on this item
Recommend to a friend
Comment on this item
Send to printer
Request a reminder of this item
Cancel a reminder of this item

Comments

 


There are no comments for this item yet...
Only registered users may comment. Log in to comment