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Correct operation will resume once the calculator is made up of malfunction, repairs, or battery replacement (fx-85B/fx280), or insufficient light. It can leak and damage the unit. • Avoid using volatile liquids such as thinner or benzine to operate. When exposed to low temperatures, the calculator may require more time to display results...
Correct operation will resume once the calculator is made up of malfunction, repairs, or battery replacement (fx-85B/fx280), or insufficient light. It can leak and damage the unit. • Avoid using volatile liquids such as thinner or benzine to operate. When exposed to low temperatures, the calculator may require more time to display results...
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...setting. Modes Application Key Mode Operation Name* Standard deviation calculations Fl SD Normal calculations Calculations using degrees F0 F4 COMP DEG Calculations using radians Calculations using grads F5 RAD F6 GRA Number of decimal place specification... F7 FIX Number of display indicator indicates COMP Mode. - 3 - fully reread this manual and ensure that the problem is not due to low battery power (fx-85B/fx...
...setting. Modes Application Key Mode Operation Name* Standard deviation calculations Fl SD Normal calculations Calculations using degrees F0 F4 COMP DEG Calculations using radians Calculations using grads F5 RAD F6 GRA Number of decimal place specification... F7 FIX Number of display indicator indicates COMP Mode. - 3 - fully reread this manual and ensure that the problem is not due to low battery power (fx-85B/fx...
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Note! • A mode guide is located at the top of the display screen. • DEG, RAD, and GRA modes can be used in combination with COMP and SD modes. • F9 does not exit SD mode. • F0 exits SD mode. • F0 does not clear SCI or FIX specifications. • Always press t before entering DEG, RAD, and GRA modes. • Remember to always set the operating mode and angular unit (DEG, RAD, GRA) before starting your calculation. - 4 -
Note! • A mode guide is located at the top of the display screen. • DEG, RAD, and GRA modes can be used in combination with COMP and SD modes. • F9 does not exit SD mode. • F0 exits SD mode. • F0 does not clear SCI or FIX specifications. • Always press t before entering DEG, RAD, and GRA modes. • Remember to always set the operating mode and angular unit (DEG, RAD, GRA) before starting your calculation. - 4 -
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O 7 + 6 - Basic Calculations • Use the COMP mode for basic calculations. • Example 1: 23ѿ4.5Ҁ53 23 + 4.5 , 53 = -25.5 • Example 2: 56҂(Ҁ12)Ö(Ҁ2.5) 56 -12 E \ 2.5 E = 268.8 • Example 3: 2Ö3҂(1҂1020) 2 \ 3 -1 e 20 = 6.66666666719 • Example 4: 7҂8Ҁ4҂5=36 7 - 8 , 4 - 5 = 36. • Example 5: 6 4҂5 =0.3 4 -5 \ 6AN = 0.3 • Example 6: 2҂[7ѿ6҂(5ѿ4)]҃122 2 - O 5+ 4PP = 122. • You can skip all P operations before the = key. - 5 -
O 7 + 6 - Basic Calculations • Use the COMP mode for basic calculations. • Example 1: 23ѿ4.5Ҁ53 23 + 4.5 , 53 = -25.5 • Example 2: 56҂(Ҁ12)Ö(Ҁ2.5) 56 -12 E \ 2.5 E = 268.8 • Example 3: 2Ö3҂(1҂1020) 2 \ 3 -1 e 20 = 6.66666666719 • Example 4: 7҂8Ҁ4҂5=36 7 - 8 , 4 - 5 = 36. • Example 5: 6 4҂5 =0.3 4 -5 \ 6AN = 0.3 • Example 6: 2҂[7ѿ6҂(5ѿ4)]҃122 2 - O 5+ 4PP = 122. • You can skip all P operations before the = key. - 5 -
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or \ twice after inputting a number to make that number a constant. • "K" is on the display while a constant is being used. • Use the COMP mode for constant calculations. • Example 1: 2.3ѿ3, then 2.3ѿ6 (2.3ѿ3) 2.3 + + 3 = (2.3ѿ6) 6 = K 5.3 K 8.3 • Example 2: 12҂2.3, then 12҂(ȕ9) (12҂2.3) 12 - - 2.3 = (12҂(ȕ...;17 ѿ17) = (17ѿ17 ѿ17ѿ17) = - 6 - K 34. K 68. K 51. A x - 5 A N = 523.5987756 Constant Calculations • Press +, ,, - • Example 7: 4/3π53 4 \ 3 -
or \ twice after inputting a number to make that number a constant. • "K" is on the display while a constant is being used. • Use the COMP mode for constant calculations. • Example 1: 2.3ѿ3, then 2.3ѿ6 (2.3ѿ3) 2.3 + + 3 = (2.3ѿ6) 6 = K 5.3 K 8.3 • Example 2: 12҂2.3, then 12҂(ȕ9) (12҂2.3) 12 - - 2.3 = (12҂(ȕ...;17 ѿ17) = (17ѿ17 ѿ17ѿ17) = - 6 - K 34. K 68. K 51. A x - 5 A N = 523.5987756 Constant Calculations • Press +, ,, - • Example 7: 4/3π53 4 \ 3 -
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....75 (53ѿ6) 53 + 6 = A Y M 59. (23ȕ8) 23 , 8 | M 15. (56҂2) 56 - 2 | M 112. (99Ȗ4) 99 \ 4 | M 24.75 (Memory recall) Z M 210.75 • Example 2: To calculate the following using memory as shown. - 7 - • Example 4: 1.74҃8.3521 (1.7 2) 1.7 - - = (1.7 3) = (1.7 4) = K 2.89 K 4.913 K 8.3521 Memory...
....75 (53ѿ6) 53 + 6 = A Y M 59. (23ȕ8) 23 , 8 | M 15. (56҂2) 56 - 2 | M 112. (99Ȗ4) 99 \ 4 | M 24.75 (Memory recall) Z M 210.75 • Example 2: To calculate the following using memory as shown. - 7 - • Example 4: 1.74҃8.3521 (1.7 2) 1.7 - - = (1.7 3) = (1.7 4) = K 2.89 K 4.913 K 8.3521 Memory...
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MK 234. kAdditional fx-85B/fx-280 Memory Calculations • The fx-85B/fx-280 has two additional memories named A and B. • Use A J to store data and 0 to recall data. • Storing data in a memory replaces anything stored there previously. • To clear a memory, store a zero in it. &#...
MK 234. kAdditional fx-85B/fx-280 Memory Calculations • The fx-85B/fx-280 has two additional memories named A and B. • Use A J to store data and 0 to recall data. • Storing data in a memory replaces anything stored there previously. • To clear a memory, store a zero in it. &#...
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Fraction Calculations • Use COMP mode for fraction calculations. • Total number of 123 ҂ 456 in memory B. t 0 2 56088. t 123 - 456 A J 2 56088. t 0 1 123. • Example 2: To store the results of digits (...; Example 1: 2 3 ѿ 4 5 ҃1175 2 C 3 + 4 C 5 = 1 7 15. • Example 2: 3 1 4 ѿ1 2 3 ҃4 11 12 3 C 1 C 4 + 1 C 2 C 3 = 4 11 12. • Example 3: 2 4 ҃ 1 2 2 C 4 = • Example 4: 1 2 ѿ1.6҃2.1 1 C 2 + 1.6 = 2 4. 1 2. 2.1 Fraction/decimal calculation result is always decimal. - 9 -
Fraction Calculations • Use COMP mode for fraction calculations. • Total number of 123 ҂ 456 in memory B. t 0 2 56088. t 123 - 456 A J 2 56088. t 0 1 123. • Example 2: To store the results of digits (...; Example 1: 2 3 ѿ 4 5 ҃1175 2 C 3 + 4 C 5 = 1 7 15. • Example 2: 3 1 4 ѿ1 2 3 ҃4 11 12 3 C 1 C 4 + 1 C 2 C 3 = 4 11 12. • Example 3: 2 4 ҃ 1 2 2 C 4 = • Example 4: 1 2 ѿ1.6҃2.1 1 C 2 + 1.6 = 2 4. 1 2. 2.1 Fraction/decimal calculation result is always decimal. - 9 -
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• Example 5: 1 2 ↔ 0.5(Fraction ↔Decimal) 1 C 2 = C C • Example 6: 1 2 3 ↔ 5 3 1C 2C 3 A B A B 1 2. 0.5 1 2. 1 2 3. 5 3. 1 2 3. Percentage Calculations • Use COMP mode for percentage calculations. • Example 1: To calculate 12% of 1500. 1500 - 12 A v 180. • Example 2: To calculate what percentage of 880 is 660. 660 \ 880 A v 75. • Example 3: To add 15% onto 2500. 2500 - 15 A v + - 10 - 2875.
• Example 5: 1 2 ↔ 0.5(Fraction ↔Decimal) 1 C 2 = C C • Example 6: 1 2 3 ↔ 5 3 1C 2C 3 A B A B 1 2. 0.5 1 2. 1 2 3. 5 3. 1 2 3. Percentage Calculations • Use COMP mode for percentage calculations. • Example 1: To calculate 12% of 1500. 1500 - 12 A v 180. • Example 2: To calculate what percentage of 880 is 660. 660 \ 880 A v 75. • Example 3: To add 15% onto 2500. 2500 - 15 A v + - 10 - 2875.
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K 216. Scientific Function Calculations • Use COMP mode for scientific function calculations. • Some calculations may take a long time to complete. • Wait for result before starting next calculation. • =3.1415926536. K 276. kSexagesimal Functions • Example 1: 14°25'36" + 12°23'34... I = 26°49°10. - 11 - • Example 4: To discount 3500 by 25%. 3500 - 25 A v , 2625. • Example 5: To calculate the following using a constant. 12% of 1200 = 144 18% of 1200 = 216 23% of 1200 = 276 (12%) (18%) (23%) 1200 - - 12 A v 18 A v ...
K 216. Scientific Function Calculations • Use COMP mode for scientific function calculations. • Some calculations may take a long time to complete. • Wait for result before starting next calculation. • =3.1415926536. K 276. kSexagesimal Functions • Example 1: 14°25'36" + 12°23'34... I = 26°49°10. - 11 - • Example 4: To discount 3500 by 25%. 3500 - 25 A v , 2625. • Example 5: To calculate the following using a constant. 12% of 1200 = 144 18% of 1200 = 216 23% of 1200 = 276 (12%) (18%) (23%) 1200 - - 12 A v 18 A v ...
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kTrigonometric/Inverse Trigonometric Functions • Example 1: sin ( 6 rad) (RAD mode) A x \ 6 = S RAD 0.5 - 12 - • Example 2: 1°2'3" + 4.56 = 5.594166667 1 I 2 I 3 I + 4.56 = 5.594166667 • Example 3: sin 87°65'43.21" = 0.999447513 (DEG mode) 87 I 65 I 43.21 I S 0.999447513 • Example 4: 1.23↔ 1°13'48" 1.23 I I I 1°13°48. 1.23 1°13°48. • Example 5: 12°34' ↔ 12.56666667 12 I 34 I A O 12.56666667 You can also use I when inputting values to convert between sexagesimal and decimal.
kTrigonometric/Inverse Trigonometric Functions • Example 1: sin ( 6 rad) (RAD mode) A x \ 6 = S RAD 0.5 - 12 - • Example 2: 1°2'3" + 4.56 = 5.594166667 1 I 2 I 3 I + 4.56 = 5.594166667 • Example 3: sin 87°65'43.21" = 0.999447513 (DEG mode) 87 I 65 I 43.21 I S 0.999447513 • Example 4: 1.23↔ 1°13'48" 1.23 I I I 1°13°48. 1.23 1°13°48. • Example 5: 12°34' ↔ 12.56666667 12 I 34 I A O 12.56666667 You can also use I when inputting values to convert between sexagesimal and decimal.
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... deviation. • If FIX or SCI is on the display, press F 9 first. • Data input always starts with A u. • Example: To calculate nҀ1, n, o, n, ⌺x, and ⌺x2 for statistical calculations using the numbers 1 through 7. 7 A m 4 = 840. θ A N RAD 1.047197551 kPermutation • Example: To determine how many different 4-member groups can be organized...
... deviation. • If FIX or SCI is on the display, press F 9 first. • Data input always starts with A u. • Example: To calculate nҀ1, n, o, n, ⌺x, and ⌺x2 for statistical calculations using the numbers 1 through 7. 7 A m 4 = 840. θ A N RAD 1.047197551 kPermutation • Example: To determine how many different 4-member groups can be organized...
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Sample standard deviation Population standard deviation Arithmetic mean Number of data Sum of values Sum of squares of the same data using -. A q SD 1.407885953 A p SD 1.316956719 A ` SD 53.375 A r SD 8. A o SD 427. A a SD 22805. • } } inputs the same data twice (as above . • To delete data you ...
Sample standard deviation Population standard deviation Arithmetic mean Number of data Sum of values Sum of squares of the same data using -. A q SD 1.407885953 A p SD 1.316956719 A ` SD 53.375 A r SD 8. A o SD 427. A a SD 22805. • } } inputs the same data twice (as above . • To delete data you ...
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... In the case of values A o kExponential Display Formats This calculator can select between two formats that determine at what point exponential notation is used. • NORM 1 With NORM 1, exponential notation is automatically used for integer values with more than 10 digits and decimal values ...with more than two decimal places. • NORM 2 With NORM 2, exponential notation is automatically used for integer values with...
... In the case of values A o kExponential Display Formats This calculator can select between two formats that determine at what point exponential notation is used. • NORM 1 With NORM 1, exponential notation is automatically used for integer values with more than 10 digits and decimal values ...with more than two decimal places. • NORM 2 With NORM 2, exponential notation is automatically used for integer values with...
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...you expect or if an error occurs, perform the following calculation. 1 \ 200 = 5. -03 NORM 1 format 0.005 NORM 2 format • All of which format is currently in this manual show calculation results using the NORM 1 format. If calculation results are working with to confirm it is no indication... on the display of the examples in effect, but did not yet press an operator key), use Q to perform the calculation and try again. F 4 (DEG mode) 3. F 9 (NORM mode) 4. To switch between NORM 1 and NORM 2 Press F 9. F 0 (COMP mode) 2....
...you expect or if an error occurs, perform the following calculation. 1 \ 200 = 5. -03 NORM 1 format 0.005 NORM 2 format • All of which format is currently in this manual show calculation results using the NORM 1 format. If calculation results are working with to confirm it is no indication... on the display of the examples in effect, but did not yet press an operator key), use Q to perform the calculation and try again. F 4 (DEG mode) 3. F 9 (NORM mode) 4. To switch between NORM 1 and NORM 2 Press F 9. F 0 (COMP mode) 2....
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... than 18 pairs of parentheses are performed using a value that exceeds the input range. ("-E-" indicator appears on display.) e. When a result (whether intermediate or final) or a total accumulated in memor y is performed during statistical calculations. ("-E-" indicator appears on the display.) ...kOverflow or Error Check The following conditions make further calculation impossible. • In a series of the above conditions, press t and perform the calculation from the beginning. - 26 - When function calculations are used , but the operation retains the order of precedence...
... than 18 pairs of parentheses are performed using a value that exceeds the input range. ("-E-" indicator appears on display.) e. When a result (whether intermediate or final) or a total accumulated in memor y is performed during statistical calculations. ("-E-" indicator appears on the display.) ...kOverflow or Error Check The following conditions make further calculation impossible. • In a series of the above conditions, press t and perform the calculation from the beginning. - 26 - When function calculations are used , but the operation retains the order of precedence...
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...clears the intermediate result just prior to operate even in total darkness. • The calculator retains memory contents no matter what the lighting conditions. • The TWO-WAY POWER system uses two power sources: a solar cell and a single G13 Type (SR44 or LR44) battery. • Weak ...lost. WAY POWER system, which makes it possible for the calculator to the overflow, so you could also press k. kPower Supply • fx-82SOLAR/fx-260SOLAR This calculator is powered by the CASIO TWO- Solar Cell Precautions • The solar cell requires at least 50 lux of light to provide power....
...clears the intermediate result just prior to operate even in total darkness. • The calculator retains memory contents no matter what the lighting conditions. • The TWO-WAY POWER system uses two power sources: a solar cell and a single G13 Type (SR44 or LR44) battery. • Weak ...lost. WAY POWER system, which makes it possible for the calculator to the overflow, so you could also press k. kPower Supply • fx-82SOLAR/fx-260SOLAR This calculator is powered by the CASIO TWO- Solar Cell Precautions • The solar cell requires at least 50 lux of light to provide power....
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...calculator is used. Old batteries may not provide full service life. • Low bettery power can cause memory contents to become shorted. Replace the back cover and secure it in place, and then remove the cover. 2. Screws Battery Screws It may leak, causing serious damage to the interior of the calculator...1151;) side facing up (so you purchase it ). 4. Install a new battery, making sure that hold the back cover in place with the calculator when you can see it). • Never try to charge batteries, take them apart, or allow them to burst or leak, possibly damaging the...
...calculator is used. Old batteries may not provide full service life. • Low bettery power can cause memory contents to become shorted. Replace the back cover and secure it in place, and then remove the cover. 2. Screws Battery Screws It may leak, causing serious damage to the interior of the calculator...1151;) side facing up (so you purchase it ). 4. Install a new battery, making sure that hold the back cover in place with the calculator when you can see it). • Never try to charge batteries, take them apart, or allow them to burst or leak, possibly damaging the...
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... first. • Registers L through L store operations.There are nested, the operations en- If parentheses are six reg- 1 6 isters, so calculations up to six levels can be stored. • Each level can contain up to three open parentheses, so parentheses can be nested up to turn... power on the next page shows register contents following operation uses 4 levels and 5 nested parentheses. 2-O OO3 +4 -OO5 +4 The table on . Press t to 18 times. • Example: The following the above input. -...
... first. • Registers L through L store operations.There are nested, the operations en- If parentheses are six reg- 1 6 isters, so calculations up to six levels can be stored. • Each level can contain up to three open parentheses, so parentheses can be nested up to turn... power on the next page shows register contents following operation uses 4 levels and 5 nested parentheses. 2-O OO3 +4 -OO5 +4 The table on . Press t to 18 times. • Example: The following the above input. -...
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Coordinate Transformation • With polar coordinates, θ can be calculated within a range of -180° θ ͨ 180°. Y Y P (x, y) P (r, θ ) Pol r y Rec θ 0 x X 0 X - 30 - The calculation range is the same for radians and grads. Register Contents x4 L1 (( 5 ѿ L 2 4 ҂ L3 ((( 3 ѿ L4 2 ҂ L 5 L6 kFormulas, Ranges, and Conventions The following are the formulas, ranges, and conventions that are applied to various calculations that can be performed using this calculator.
Coordinate Transformation • With polar coordinates, θ can be calculated within a range of -180° θ ͨ 180°. Y Y P (x, y) P (r, θ ) Pol r y Rec θ 0 x X 0 X - 30 - The calculation range is the same for radians and grads. Register Contents x4 L1 (( 5 ѿ L 2 4 ҂ L3 ((( 3 ѿ L4 2 ҂ L 5 L6 kFormulas, Ranges, and Conventions The following are the formulas, ranges, and conventions that are applied to various calculations that can be performed using this calculator.
