Tuesday, November 1, 2011

Math Spiral Wednesday Nov. 2, 2011

Solve the following riddle.

If you add 7 ten millions and subtract 9 tens from the magic number, you would have 837,938,337.

a.  What is hte magic number?
b.  Write a number sentence to explain how you got your number.
c.  Write the magic number in expanded form.

1 comment:

  1. I would like to see your students posting on your blog :) Wonderful job!

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