Tour page 8

TIp number 8
Bring questions to class.

If you can do a problem but it takes you more than one minute to find the answer, call it "FASTER"

If you don't know how to find the answer, put a "?" Question mark

If you know how to do the problem in under one minute, then cross out that question.


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21 x 19 =  (20 + 1) (20 - 1)

           =  400 - 1   =  399


The key to a faster result is to automate your calculations and procedures.

You can automate by practicing the procedures WITH ATTENTION to the steps.

Eventually you will CHUNK the steps, you will put five small steps into two large chunks.

What is 18 x 18?

Think about 9 x 9  x 2 x 2    
or   9 x 9 x 4    ANSWER  
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