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Estimation Strategies
I
bet you can't estimate how much you will learn within these
pages but I bet you will learn a lot while we discuss estimation
strategies with amusement parks!
Explanation-
Rounding
numbers is a very important and useful mathematic skill. Sometimes
numbers are more exact then you really need them to be to
provide useful answers. In some cases you mgiht want to estimate
an answer using numbers simple enough for mental math in your
head. In both cases you can make your work easier by rounding.
Do the following activities to improve your rounding skills.
How
to round-
The Kumba
ride at Busch Gardens in Tampa Florida can hold 42 riders
at a time.
About
how many riders is that?
42 Find
the place value
42 look to the right of it
42 if it is more than 5 add 1 to the digit your rounding to,
if its less than leave it
42 turn all the digits behind the digit your rounding to to
zero
40 is the answer.
Examples-
The first
american roller coater was not in an amusment park or city,
but in the hills and mountains of Pennsylvannia. The Mauch
Chunk Switchback Railway was a lot more like a runaway train
than a roller coaster yet it is considered a forefather of
today's modern coaster. The Mauch chunk Switchback railway
brought coal down the mountain in a steep drop creating a
wild drop for the workers.
In 1872 they built
the Hautu Tunnel. It provided a new, less dangerous, less
exciting way of transporting coal through the mountain, not
down it. The old track wasn't being used, so they allowed
civillians to ride it, for a price.
Round the legnth of the track to the nearest thousandths
The Kumba
at Busch Gardens in Tampa, Florida has a duration (ride time)
of 2 minutes and 54 seconds.
About how many minutes is the ride?
HINT:
Use 30 as your five
Most people
round times on the clock, for example, if it's 7:21, you'd
say a syllable and say 7:20.
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