Simple Arithmetic Calculations

[+], [-], [X], [] and [=] are the standard

function keys.

Press the Equal key [=] to obtain the result of an operation.

If the wrong function key is pressed during an operation, pressing the correct key will cancel the previous function.

Here is an example of addition:

9 [+] 9 [=] 18

Working with Percentages

Calculating percentages is easy with your Datexx DH-170FS.

What percentage of 211 is 40? 40 [] 211 [%] 18.95%

Business Calculations

Profit Analyzer

MARGIN SELL COST

COST COST SELL

SELL

MARGIN MARGIN

Your calculator can handle standard business calculations, such as determining the Gross Profit Margin; how to set selling prices, and how to calculate costs, such as dealer cost.

(Note: Pay special attention to the keys used below to be certain you are selecting the proper key for your desired function)

Currency Exchange

To determine a currency exchange rate, you need to enter the current exchange

rate value.

For example, if the Euro was currently pegged at 1 Euro = 0.9822 of the U S Dollar, here is how you would do the calculations:

1.Select and hold down the [USD] key until “0” shows.

2.Enter the USD value (0.9822).

3.Press the [USD] key setting the value.

Tax Calculations

To perform a tax calculation, program your calculator with the tax rate by pressing and holding the [%] key until “0” is displayed.

If, for example, the Tax Rate is 3.75%, enter that value. And press the [%] key again. Now the tax rate is set.

If a dinner bill is $120.00 how much is the total bill including 3.75% tax?

Enter 120 [TAX+]

124.50

Enter [TAX+] again to see the amount of

 

tax paid

4.50

 

 

Your credit card charge is $138.00. How much was the bill before tax was added in?

What is 37% of 931? 931 [X] 37[%] 344.47

Working with the Memory

The memory functions of this calculator are accessed with 3 keys:

To store data in memory [M+].

To subtract data from memory [M-].

And finally, to recall stored memory [MRC].

Calculating the Gross Profit Margin

You bought stock for $10 a share

10

MARGIN

 

 

[COST]

 

 

[SELL]

You sold it for $15 a share

15

Your Gross profit margin is

 

33.33%

Determining the Selling Price

You bought an investment

SELL

How much is $150 in the Euro currency?

Enter 150 Press [USD]

Press [Foreign] 152.72

How much is 275 in the Euro currency worth in U S Dollars?

Enter 275 Press [Foreign]

Press [USD] $270.11

Enter 138 [TAX-]

133.01

Enter [TAX-]again to see the amount of

 

tax paid

4.98

Troubleshooting

Problem:

Nothing is displayed on the LCD display.

Solution:

Check that the battery is fresh and placed correctly.

Tapping [MRC] once displays the data stored in memory.

Tapping [MRC] twice clears all data stored in memory.

(You will note the memory symbol “M” disappears from the calculator display when the memory is cleared.)

Finding a Square Root

To find a square root, enter the number and press the square root key.

620 [] [=] 24.899

property for $130,000

130000

[COST]

You would like to make

15

[MARGIN]

a 15% profit

 

 

 

 

 

The selling price should be

 

152,941

Determining Cost

(E.g., a Dealer’s Cost)

You know the car has an

35000

COST

MSRP of $35,000

[SELL]

 

You estimate the dealer’s

15

[MARGIN]

profit to be 15%

 

 

 

The Dealer’s cost is

 

$29,750

 

estimated at

 

 

 

 

 

Care and Maintenance

Keep this unit dry. Avoid dropping the calculator.

If it gets wet, wipe it dry before use. Do not clean with harsh solvents or detergents.

Wipe clean with a soft slightly damp cloth.

www.datexx.com

TELEDEX Limited U.S.A. Warranty

TELEDEX INC. warrants these products to the original purchaser to be free from defective material and workmanship. The product will be repaired or replaced at our option, for up to one year when returned with proof of purchase to the address below. Include a check or money order for $5.00 to cover postage.

TELEDEX INC. 1 Atlas st. Kenilworth, NJ 07033 Printed in China 10/02

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Datexx DH-170FS operation manual Simple Arithmetic Calculations, Business Calculations