Posted by **B.B.** on Wednesday, June 10, 2009 at 1:04pm.

Here is the question: Find the exact value of the following expression: 6*22*5. Use any mental calculation technique you choose. Name the technique. Here is what my answer looks like: 6*22*5 (6*5)*2*11 (30*2)*11 60*11=660 I multiplied by simple numbers. Is this right. Could you please explain it to me?

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**Count Iblis**, Wednesday, June 10, 2009 at 1:11pm
Yes, this is correct.

- Math -
**B.B.**, Wednesday, June 10, 2009 at 1:29pm
Thanks.

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