Learning objective: To be able to use partitioning to double or halve numbers. . Place value. Numbers are categorised as being either units/ones, tens, hundreds or thousands etc. The position of the digit within an number shows its value according to its ‘place’.
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
To be able to use partitioning to double or halve numbers.
BUT of you partition it into tens and units
( 40 + 7)
Double 40 is relatively easy = 40x 2 = 80
Double 7 is a known double = 7 x 2 = 14
Add these together 80
Have a go at this calculation using your knowledge of partitioning and known doubles.
Q. What is double 67?
(50 + 8)
Main activity: halves!