Brilliant Bombastic Blogging 2010
Thursday, August 19, 2010
Doubling and halving
The strategy of doubling and halving is fun and is very good for making equations smaller and easier.
e.g 200 x 187 = 100 x 374 = 37400
Here I doubled 187 and halved 200 to make 37400.
Room 12 BDS
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