Time for MATH MINUTE!
(provide your favorite theme music here). Get out
your paper & pencil, because I have a new puzzle for you!!
PUZZLE #1 An oldie but a goodie! Sept.
11 – 15
First, write
down the numbers 123456789 in that order.
Next, insert one
plus sign + and two minus signs - , - so that the resulting numbers total exactly 100.
FOR EXAMPLE:
You could try 12+345-67-89, but
that does not work, why not? Or
you could try 1234-5+678-9, but that
does not work either? Hmmm??
Can
you do it?
Is
it possible??
Try
it – and have fun!
If
this is too hard, try this warmup puzzle:
Use
the numbers 12345 in that order and follow the
above instructions inserting one plus sign + and two minus signs - , - so that the total is exactly 10.
Then go back to
the puzzle above.
If
this was too easy, try this BONUS PUZZLE:
Is
there more than one way to work this puzzle??
Send
your comments, ideas and solutions before Friday Sept. 15 to the email
below, and in the subject line be sure to put: MM
Visit
us here online at:
http://www2.potsdam.edu/parksjm/MM.htm
to see the results every Friday.
See you next
time on MATH MINUTE! (theme music
fades out here).