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Reference Manual for the

MathMaster

™

Educational Calculator

a product of

Stokes Publishing Company

Sunnyvale, CA

MathMaster

®

K

E

Y

E

L

I

M

I

N

A

T

O

R

2

0

•

3

1

5

8

6

x

–

M+

+/–

%

MRC

RESET

4

7

+

=

CE/C

M–

÷

9

8

M+

MRC

RESET

4

7

1
2
3
...
»

Summary of Contents for MathMaster

Page 1: ...erence Manual for the MathMaster Educational Calculator a product of Stokes Publishing Company Sunnyvale CA MathMaster K E Y E L I M I N A T O R 2 0 3 1 5 8 6 x M MRC RESET 4 7 CE C M 9 8 M MRC RESET...

Page 2: ...y r Memory recall memory clear RESET Clears decimal fix and all pending operations _ Toggles sign of dispayed number Percent v Square root MathMaster is a registered trademark of Stokes Publishing Com...

Page 3: ...uences contain single digit numbers so you can concentrate on the process rather then on cumbersome computations You will then gain the confidence and know how to use the MathMaster to perform difficu...

Page 4: ...y will be cleared Operation Icons Icons for the operations of addition subtraction multiplication and division will appear on the right side of the display in a large five by five dot matrix to indica...

Page 5: ...parates large numbers into periods 4 Operation of addition in progress or pending 4 Operation of subtraction in progress or pending 4 x Operation of multiplication in progress or pending 4 Operation o...

Page 6: ...ay separate this seven digit number into periods of three for ease of reading Clear the display by pressing c Press 5 3 Display 8 Notice that when the addition key was pressed the addition icon appear...

Page 7: ...e display s 8 digit capacity Press c Display 0 The error has been cleared Round Off The MathMaster performs precise calcula tions with a round off feature Press 2 3 The right most digit is a 7 The rou...

Page 8: ...4 x 5 3 x 2 press 5 3x2 x4 Display 44 Constant Operations Use the constant feature to repeatedly operate with the same number Example Press Display Use 4 as a constant RESET or CE C 0 2 4 5 4 7 4 9 4...

Page 9: ...00 Notice that the counter shows the number of times the entered number is used as a factor Example Press Display RESET or CE C 2 3 2 2 2 3 3 2 3 5 2 3 3 8 2 3 3 3 11 2 3 3 3 3 14 Notice that the coun...

Page 10: ...once recalls memory to dis play memory indicator active Pressed twice clears memory mem ory indicator not displayed Press 4 5 Display 9 Press M The displayed number is stored in memory The display now...

Page 11: ...y Press 25 Display 0 25 assumes 25 of 1 To find 25 of 60 press 25 x60 Display 15 To find 60 multiplied by 25 press 60x25 Display 15 Discount and Markup An item that sells for 80 is discounted 25 What...

Page 12: ...new price Press Display 120 120 120 20 20 24 144 The new price for the dress is 144 A VCR selling for 250 is to be discounted 40 What will the VCR cost including a 6 sales tax Press Display 250 250 25...

Page 13: ...d 24 commission on June sales of 9 250 What was the total of his two month commissions Press Display 12500 12500 x 12500 x 15 15 0 15 1875 M 1875 M 9250 9250 Press Display x 9250 x 24 24 0 24 2220 M 2...

Page 14: ...the negative sign floats depend ing on the number of digits Square Root Key To find the square root of 49 press 49v Display 7 To find the square root of 12 25 press 12 25v Display 3 5 Press x Display...

Page 15: ...period of 3 4 seconds The user will then be unable to use the number or operation that was eliminat ed A large black dot will appear in the left hand portion of the display indicating that this featur...

Page 16: ...g this calculator or any other calculator for that matter since different calculators process percentages in different ways In add on and discount problems the calcu lator always assumes the first num...

Page 17: ...o the calculator the result will be 3 24 when the equals key is pressed Changing the Calculator Identification Numbers The MathMaster s unique identification sys tem consists of two number wheels back...

Page 18: ...the way through before accomplishing it 1 With the MathMaster face down remove the four screws securing the back case 2 Remove the back case by lifting and rotat ing it to the left and placing it back...

Page 19: ...numbers will be visible through the ID window Replace the wheels by aligning the holes in the wheels so that they fit over the raised guide posts in the case Check to see if the desired numbers are v...

Page 20: ...ads Battery Replacement The MathMaster is designed to operate for an average of five years on the factory installed battery When the display becomes too dim to read the battery should be replaced with...

Page 21: ...attery to the cur cuit board 3 Locate the battery and battery retainer Do not remove the battery retainer screws 4 Inserting a small screwdriver or similar instrument from the left side near the Numbe...

Page 22: ...ght of the battery retainer Using a finger carefully press the battery toward the left back into the retainer until it snaps into place 6 Replace the back case and install the four screws Be sure that...

Page 23: ...her causes not due to defects in workmanship or materials Disclaimers Any implied warranties including but not limited to the implied warranties of mer chantability and fitness of use are limited to t...

Page 24: ...STOKES PUBLISHING COMPANY 1292 Reamwood Avenue Sunnyvale CA 94089 Phone 408 541 9145 Fax 408 541 9149 Printed in USA SPC 9 95...

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