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Capital Mysteries #7: Trouble at the Treasury

Written by Ron RoyAuthor Alerts:  Random House will alert you to new works by Ron Roy
Illustrated by Timothy BushAuthor Alerts:  Random House will alert you to new works by Timothy Bush


· Random House Books for Young Readers
· Trade Paperback · Ages 6-9 years
· December 26, 2006 · $4.99 · 978-0-375-83969-6 (0-375-83969-0)

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Capital Mysteries #7: Trouble at the Treasury
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ABOUT THIS BOOK

After a short tour at the Bureau of Engraving and Printing, KC and Marshall
learn that money has mysteriously disappeared from the cutting room floor.
They elicit the help of Casey Marshall, the president’s clone, to get them into
the BEP to investigate the case.

SUGGESTED ACTIVITIES

Math
The machines at the Bureau of Engraving and Printing are making $100
bills. Each sheet of money contains 32 $100 bills. Those bills are then cut
and stacked into bricks containing 1,000 bills.
Present the following math question to your class: If the Treasury continued
to print $100 bills every day, about how much money do you think would be
made in a week? In a month? In a year? (These should all be estimates)
Work with your students to calculate how much money one sheet represents.
Then model the process of calculating how much money is in one brick. We
know from the book that the Treasury makes about $700,000,000 every day.
Break students into partners and ask them to figure out, using a calculator,
how much money could be made in one week, one month, and one year.
Then bring the class together and ask partners to share their answers and
strategies. Be sure to practice writing and saying very large numbers!
★ One sheet: 32 x $100 = $3,200
★ One brick: 1,000 x $100 = $100,000
★ One week: 7 x $700,000,000 = $4,900,000,000
★ One month: 30 x $700,000,000 = $21,000,000,000
or 4 x $4,900,000,000 = $19,600,000,000
★ One year: 52 x $4,900,000,000 = $254,800,000,000
or 365 x $700,000,000 = $255,500,000,000

PDF ATTACHMENT
Click here to download the Teacher's Guide PDF

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