Table of Contents
Advertisement
ENDING A CALCULATION
SUBTOTALING
When you
have completed all inputs for a calculation, push the (+=)
In series calculations, the (+=> PLUS-EQUALS key and {-=) MINUS-EQUALS
PLUS-EQUALS key, or the (-=} MINUS-EQUALS key if the last entry is a
key display a subtotal,
negative number. This displays the answer. It is then necessary to push the {C}
CLEAR key to clear the Calculator before you enter numbers for a new
calculation.
TYPICAL
PERCENT OF A NUMBER
Just as a cent is one one-hundredth of a dollar, one percent is one one-hundredth
of a unit. Therefore just as a cent (1 penny) times one hundred equals one
dollar, one hundred times one percent equals one unit (100%). Divide one
percent by one hundred and the result is the decimal equivalent.
Example:
1 (%) 4-100 = 0.01
A 4% (.04) sales tax on a five dolfar purchase would be .04 times the purchase
price.
hxampie: $5.00 x .04 - $0.20 sales tax
The total amount of a five dollar purchase, including the tax would be $5.00 x
1.04 (one times five dollars plus .04 times five dollars).
THE PERCENT ONE NUMBER IS OF ANOTHER NUMBER
A $5.50 increase on a $110 item.
Example:
5.50 4-110- 0.05
.05 x 100 - 5%
UNIT COSTS
The cents per pound cost of an item sold as ten pounds for $0.69 would be
$.069 a pound.
Example:
$ .69 4-10 " $0,069 for one pound.
A dozen (12) items at $0.60 would be $0.05 each.
Example:
$0.60 4-12- $0.05 each.
A car travels 360 miles and requires 20 gallons of gas. a gallon for every 18 miles
or $0.02 a mite at $0.36 per gallon.
Example:
$5.00 x 1.04 * $5.20 total amount
Example:
360 4- 20 " 18 miles per gallon
$0.36
4-18 = $0.02 cost per mile for gas
Advertisement
Table of Contents
