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Chapter 3: Manual Calculations
CONCEPT
1. Enter a math expression, then perform the calculation.
2. Save a number into a store, then recall the value later.
PROCEDURE
1. First, press
#
, then
C
to clear any screen entries.
2. Type 186282
=
7.5, then press
E
. The circumference of the
Earth is thus obtained.
3. Store the answer in a variable. A variable is a symbol under
which you can store a numerical value.
We will use variable A to store the
circumference of the Earth. Press
R
to set the “store” mode. Press
A
A
, then
E
to store the
answer. To call up the stored
answer, press
A
A
E
again.
4. Now, since the value you have
stored under “A” is the distance you
will be travelling in 24 hours, divide
the number by 24. Press
A
A
=
24, then
E
.
So, you are travelling at 1034.9 miles/hour.