Doubling a two digit number using partitioning

Using partitioning, doubling a two digit number becomes much easier.

After you have watched the video below use the strategy to double these numbers.

 

Double 24

Double 46

Double 37

Double 29

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Doubling a two digit number

When we double a two digit number, we need to be able to partition the number so that each digit can be doubled separately before we ad them back together.

Remember that doubling is the same as multiplying by 2.

Watch the video below to practice your doubling skills.