A quick tutorial on how to find roots or radicals, including square and cube roots on the Texas Instruments TI-03Xa Scientific Calculator.0:00 Intro0:18 Butt...TI-30XA Calculator Tips Calculator Memory - To use the memory function, hit the STO key to store a number in either memory 1, 2, or 3. o To store the product of , hit STO ; you will now have stored in memory 1 (M1) o To recall the value that is being stored in memory 1 (M1), use the RCL button. RCL 1 The Texas Instruments TI-30XA scientific calculator can do this for you. It is extremely handy when it comes to figuring tricky fractions. It can add, subtract, multiply, and divide fractions when entered in a traditional numerator/denominator format. This calculator can also do a variety of conversions, from fractions to decimals, degrees to ... Jul 22, 2021 · Basic Arithmetic Enter the first number then press the “+”, “-“, “x” or “/” (division), depending on the operation. Enter the next number and then the “=” to complete the operation. Because the TI-30Xa performs mathematical operations in the order of parenthesis, exponents, multiplication/division and addition/subtraction ... A quick tutorial on how to square, cube, and solve positive and negative exponents or powers on the Texas Instruments TI-30XS Multiview calculator used for GED exams. Contents: 0:00 Intro 0:19 ...Key features. One-line, 10-digit display. Fraction features. One-variable statistics. Conversions. Basic scientific and trigonometric functions. Ideal for general math, pre-algebra, algebra I and II and general science. Exam acceptance. The TI-30Xa scientific calculator is approved for use on SAT ®, ACT ® and AP ® exams.TI-30Xa calculatorThe Texas Instruments TI-30XA scientific calculator can do this for you. It is extremely handy when it comes to figuring tricky fractions. It can add, subtract, multiply, and divide fractions when entered in a traditional numerator/denominator format. This calculator can also do a variety of conversions, from fractions to decimals, degrees to ...TI-30xa What is the label on the "shift" key(s) yellow-shift: 2nd Where is the shift key? top left Scientific notation; entering. Identify the key used to enter the exponent. (It is usually EE or EXP, or similar.) A quick tutorial on how to solve logs and LN natural log of any base on the Texas Instruments TI-30Xa Scientific CalculatorHopefully youve found somethin. 1 Enter 5 and press 2nd LOG 10 x is labeled above it. That is enter 1000 LOG. ƒ To turn off the TI-30Xa Solar cover the solar panel with the slide case. Insert a flat-head screwdriver into ... Apr 24, 2017 · Press the "On/c" button to clear the calculator. Enter a figure and then hit the "X" key followed by another figure and then the "2nd" key to work out a percentage. This sum will multiply the first figure by the second to two decimal points. Entering "200 X 5 "2nd" and then "=" would give you 5 percent of 200, or 10, for example. Texas Instruments TI-30XA Texas Instruments - Editorial Reviews (1) Add editorial review. www.reviewstream.com. Review: Texas Instruments TI-30XA Scientific Calculator. I just recently bought this calculator for a chemistry course about a year ago, and it has been incredibly easy to use. operations, settings, and memory. TI-30Xa Solar ¦ To turn on the TI-30Xa Solar, expose the solar panel to light and press !. Note: Always press ! to clear the calculator because memory and display may contain incorrect numbers. ¦ To turn off the TI-30Xa Solar, cover the solar panel with the slide ; Texas Instruments TI30XA | User Manual - Page 4 To calculate logarithms with a base different than 10, you may use the following workaround: 1) Input [160] Press [LOG]. 2) Press [÷]. 3) Input [4] Press [LOG]. 4) Press [=] to complete the calculation. The calculator will display 3.6609. Please see the Scientific Model family guidebooks for additional information. Feb 9, 2018 · This is a quick tutorial on how to do basic exponents or powers including square roots, cube roots and others, on the Texas Instruments TI-30Xa calculator.Co... TI-30Xa automatically if no key is pressed for about 5 minutes, but does not clear display, settings, pending operations, or memory. Note: | after APD retrieves display, pending operations, settings, and memory. TI-30Xa Solar ƒ To turn on the TI-30Xa Solar, expose the solar panel to light and press !. Note: Always press! to clear the ... 2nd, X-1, then just the exponent (include the negative sign, if present) SCI/ENG o To change that scientific notation to a “regular” number, press 2nd , DRG , and to FLO , = , =. (FLO – floating decimal) o To multiply or divide in scientific notation, enter the first item as scientificOct 2, 2021 · MEMORIES: 1 DISPLAY: 12 LEDs KEYBOARD: 31 buttons SWITCHES: Top Right On/Off BATTERIES: 3-AA NiCads PHYSICAL: 5.8" x 3.2" x 1.3" WEIGHT: 8.25 ounces PRODUCTION: Introduced on August 1, 1975 COST: $49.95 INFO: o Possibly the last TI slide rule calculator that did not have trig functions. SR-20 AC only version of the SR-22 SR-20 was a slightly ... This video will show you how to calculate positive, negative & fraction exponents using your Texas Instrument TI-30X IIS. It will also show you how to conve...This video will give you a complete overview of all of the functions that the Texas Instruments TI-30XA scientific calculator has to offer: from statistics ...Fraction features. Conversions. Basic scientific and trigonometric functions. Edit, cut and paste entries. Solar and battery powered. One- and two-variable statistics. Ideal for general math, pre-algebra, algebra I and II, geometry, statistics and general science. Exam acceptance. The TI-30XIIS™ scientific calculator is approved for use on ...Mar 18, 2016 · This video will show you how to calculate positive, negative & fraction exponents using your Texas Instrument TI-30X IIS. It will also show you how to conve... TI-30XA Calculator Tips Calculator Memory - To use the memory function, hit the STO key to store a number in either memory 1, 2, or 3. o To store the product of , hit STO ; you will now have stored in memory 1 (M1) o To recall the value that is being stored in memory 1 (M1), use the RCL button. RCL 1 To input an exponent using the TI-30X IIS/B, TI-34 II Explorer Plus, TI-30XS MultiView, and TI-34 MultiView, use the carat [^] key. For TI-30X IIS/B, TI-34 II Explorer Plus, and TI-30XS MultiView users, the carat key is located below the [p] key. For TI-34 MultiView users, the carat key is located below the [x 2] key. For example: 3 4 = ? Jul 20, 2014 · TI models: Press [SCI/ENG]. The display shows FLO SCI ENG. Use the left arrow key to select FLO. Then press [=]. On other TI models, press [2nd] [FLO].The display switches to decimal notation. Casio models: Press [SHIFT] [MODE] [6:Fix]. You are then prompted to enter a number between 0 and 9. The number you enter fixes the number of decimal ... The TI-30Xa is a scientific calculator made by Texas Instruments. This single-line calculator contains three memory stores labeled “M1,” “M2” and “M3.”. Storing numbers in memory makes working with the same few numbers easier, letting you quickly pull a stored number back up for use. Step 3 – The TI-30Xa is really a scientific ...Aug 3, 2021 · The TI-30Xa is a scientific calculator made by Texas Instruments. This single-line calculator contains three memory stores labeled “M1,” “M2” and “M3.”. Storing numbers in memory makes working with the same few numbers easier, letting you quickly pull a stored number back up for use. Step 3 – The TI-30Xa is really a scientific ... The TI-30Xa is one of the best calculators for 8 th graders. It performs many functions such as trigonometric functions, powers, factorials, reciprocals, and much more. The calculator is powered by a battery for your ease and convenience. The calculator is ideal for primary and advanced math, which is why you can also use the calculator as you ...TI-30Xa Calculator - Fractions and Decimals Worksheet and Key. This Fractions and Decimals Worksheet (with complete Key) gives students practice to become fluent and efficient using their calculator. Students get 30 fractions to 1) enter correctly and 2) change the format. Students also get 20 fractions problems involving addition, subtraction ...Ans 0.000316 or 3.16 x 10-4 2. If the [H+] = 3.16 x 10-4 and you are asked to find the pH (this is calculating a -LOG). The TI-30Xa and Casio fx-250HC are the same except where indicated. Enter 3.16 ( the 3 significant digits of the [H+] ) a. on the TI press EE key b. This video tutorial will show you how to enter exponents in the TI-30XS Multiview CalculatorLOG) TI-30Xa and Casio fx-250HC are the same for all these operations. Enter 3.16 (3 digits meaning of key [H+] ) Press X (time key) Type 10 Press xy key (can be labeled as yx key, or xy or yx. This allows you to set the next number entered as an exponent of 10) Type 4 (this is a negative exponent ofIndependent work by students - no prep needed by teacher. Just print a copy of the tutorial and worksheet for each student and watch them learn how to use their calculators well. This step by step Exponents and Roots Tutorial, with images of the calculator and the relevant keys, guides students to i... This video shows how to enter Powers or Scientific Notation into the TI-30XA Calculator. Example of Powers 4^6 , Scientific Notation 3.45 x 10^4TI-30Xa automatically if no key is pressed for about 5 minutes, but does not clear display, settings, pending operations, or memory. Note: | after APD retrieves display, pending operations, settings, and memory. TI-30Xa Solar ¦ To turn on the TI-30Xa Solar, expose the solar panel to light and press !. Note: Always press! to clear the ...A quick tutorial on how to solve logs and LN natural log of any base on the Texas Instruments TI-30Xa Scientific CalculatorHopefully youve found somethin. 1 Enter 5 and press 2nd LOG 10 x is labeled above it. That is enter 1000 LOG. ƒ To turn off the TI-30Xa Solar cover the solar panel with the slide case. Insert a flat-head screwdriver into ...TI 30X IIS vs TI 30Xa. TI 30X IIS and TI 30Xa are two scientific calculators from Texas Instrument. These calculators are popular and easy to use as well as very affordable. Considering the price, you will get more than enough with either of them. Go check our article below if you want to know which is better between these best buys.Ans 0.000316 or 3.16 x 10-4 2. If the [H+] = 3.16 x 10-4 and you are asked to find the pH (this is calculating a -LOG). The TI-30Xa and Casio fx-250HC are the same except where indicated. Enter 3.16 ( the 3 significant digits of the [H+] ) a. on the TI press EE key b. Press the "On/c" button to clear the calculator. Enter a figure and then hit the "X" key followed by another figure and then the "2nd" key to work out a percentage. This sum will multiply the first figure by the second to two decimal points. Entering "200 X 5 "2nd" and then "=" would give you 5 percent of 200, or 10, for example.Suppose you want the value y x. On most calculators, you enter the base, press the exponent key and enter the exponent. Here's an example: Enter 10, press the exponent key, then press 5 and enter. (10^5=) The calculator should display the number 100,000, because that's equal to 10 5. Before you start making a list of calculations, however, you ...Scientific notation and display setting Logarithmic Functions. Enter the log number then "LOG" to get the logarithm of the number. Enter the number and then "LN" for the natural log of a number. The TI-30Xa does not allow for logarithms with bases other than 10 or the natural number e. Enter the exponent, "2nd" and "10^x" to calculate an exponential multiple of 10.The 2nd Function Key. You’ll seldom employ some of the 30XA’s more esoteric functions when taking the college entrance and Advanced Placement tests. One key function that you may not be familiar with, however, is essential for successful completion of the test. This is the yellow [2nd function] key at the upper left-hand corner of the keyboard.Aug 17, 2018 · A quick tutorial on how to find roots or radicals, including square and cube roots on the Texas Instruments TI-03Xa Scientific Calculator.0:00 Intro0:18 Butt... Press the "Log" button on your calculator. The number you immediately see is the exponent for the original number you entered. Assuming the base number is 10 (which it will always be on a graphing or scientific calculator), you have to multiply 10 by itself the number of times you see onscreen to reach your original number. Check your work.TI-30xa; What is the label on the key for entering exponents? EE Where is that key? middle When entering a number that starts with 1x in scientific notation, do you need to enter the 1? (e.g., 1x10 12) yes What is the key for making an exponent negative? +(arrows)- Where is that key? bottom rightused to get the second (or third) function for a specific key. If there are two shift keys, you can list both. TI-30xa What is the label on the shift key(s) yellow shift: 2nd Where is the shift key? top left Scientific notation; In. Identify the key that is used to specify the exponent. (It's usually EE or EXP, or similar.)Mastering the calculator using the Texas TI-30XIIB and TI-30XIIS 11 4. Powers 4.1 Squaring and higher powers 62 means 6 × 6. You can use the square key to do this calculation. (It is shown on the photograph of your calculator here.) Press the display should read 36. Or you can use the power key on your calculator.Aug 12, 2014 · For a TI-30 calculator: Take for example the number 1.52 x 105. To type this number as it is in scientific notation, first type in 1.52. Next press the [2nd] key and then the key that has EE printed above it (it's the x-1 key). The EE means " x 10 to the power of". After you press the [EE] key, type in the exponent 5. 2nd, X-1, then just the exponent (include the negative sign, if present) SCI/ENG o To change that scientific notation to a “regular” number, press 2nd , DRG , and to FLO , = , =. (FLO – floating decimal) o To multiply or divide in scientific notation, enter the first item as scientific Find the two notches at the top of the calculator. Insert a flat-head screwdriver into one of the notches and carefully pry open the top end of the case. Locate where the case is still attached at the sides. Insert the flat-head screwdriver into one side where the gap has widened. Now gently pry apart the sides of the case.2nd, X-1, then just the exponent (include the negative sign, if present) SCI/ENG o To change that scientific notation to a “regular” number, press 2nd , DRG , and to FLO , = , =. (FLO – floating decimal) o To multiply or divide in scientific notation, enter the first item as scientificTI 30X IIS vs TI 30Xa. TI 30X IIS and TI 30Xa are two scientific calculators from Texas Instrument. These calculators are popular and easy to use as well as very affordable. Considering the price, you will get more than enough with either of them. Go check our article below if you want to know which is better between these best buys.The TI-30XA is an inexpensive scientific calculator approved for use on SAT and ACT tests, two of the most common college entrance exams, and on Advanced Placement exams. You may not take your own calculator to these exams, so become familiar beforehand with specific capabilities and limitations of the TI-30XA calculator handed out with the test.TI models: Press [SCI/ENG]. The display shows FLO SCI ENG. Use the left arrow key to select FLO. Then press [=]. On other TI models, press [2nd] [FLO].The display switches to decimal notation. Casio models: Press [SHIFT] [MODE] [6:Fix]. You are then prompted to enter a number between 0 and 9. The number you enter fixes the number of decimal ...TI models: Press [SCI/ENG]. The display shows FLO SCI ENG. Use the left arrow key to select FLO. Then press [=]. On other TI models, press [2nd] [FLO].The display switches to decimal notation. Casio models: Press [SHIFT] [MODE] [6:Fix]. You are then prompted to enter a number between 0 and 9. The number you enter fixes the number of decimal ...TI-30Xa automatically if no key is pressed for about 5 minutes, but does not clear display, settings, pending operations, or memory. Note: | after APD retrieves display, pending operations, settings, and memory. TI-30Xa Solar ¦ To turn on the TI-30Xa Solar, expose the solar panel to light and press !. Note: Always press! to clear the ... Mastering the calculator using the Texas TI-30XIIB and TI-30XIIS 11 4. Powers 4.1 Squaring and higher powers 62 means 6 × 6. You can use the square key to do this calculation. (It is shown on the photograph of your calculator here.) Press the display should read 36. Or you can use the power key on your calculator.Dec 19, 2011 · How to work with numbers in scientific notation with the TI-30XA calculator. Demonstrates how to toggle back-and-forth between standard/normal/floating notat... Dec 19, 2011 · How to work with numbers in scientific notation with the TI-30XA calculator. Demonstrates how to toggle back-and-forth between standard/normal/floating notat... TI-30XA Calculator Tips Calculator Memory - To use the memory function, hit the STO key to store a number in either memory 1, 2, or 3. o To store the product of , hit STO ; you will now have stored in memory 1 (M1) o To recall the value that is being stored in memory 1 (M1), use the RCL button. RCL 1TI 30X IIS vs TI 30Xa. TI 30X IIS and TI 30Xa are two scientific calculators from Texas Instrument. These calculators are popular and easy to use as well as very affordable. Considering the price, you will get more than enough with either of them. Go check our article below if you want to know which is better between these best buys.Oct 11, 2018 · A quick tutorial on how to find statistics from a data set including mean and standard deviation on the Texas Instruments TI-30X iis Scientific CalculatorCon... First, press the number you want to take the factorial of, press the “x!” key, and finally press the “=” key to evaluate it. Finding the “x!” key on your calculator will be the most challenging part of the operation. In some cases, the key is found on a secondary or tertiary function, with the symbol above the button you need to ...The Texas Instruments TI-30Xa is a scientific calculator that features 10 digits for precise calculations. Designed with portability in mind, its compact form factor makes it ideal for pocket storage. Powered by a battery, this calculator is always ready for use without the need for an external power source.The TI-30XA is an inexpensive scientific calculator approved for use on SAT and ACT tests, two of the most common college entrance exams, and on Advanced Placement exams. You may not take your own calculator to these exams, so become familiar beforehand with specific capabilities and limitations of the TI-30XA calculator handed out with the test. 2nd, X-1, then just the exponent (include the negative sign, if present) SCI/ENG o To change that scientific notation to a “regular” number, press 2nd , DRG , and to FLO , = , =. (FLO – floating decimal) o To multiply or divide in scientific notation, enter the first item as scientific I can use either a Ti-30Xa calculator or the iphone calculator for a exam. I just need to know how to put a number to a certain exponent on them. For example: 0.693^-0.28891, how can I type that in in one of my devices? Jul 23, 2018 · This video tutorial will show you how to enter exponents in the TI-30XS Multiview Calculator Jul 23, 2018 · This video tutorial will show you how to enter exponents in the TI-30XS Multiview Calculator A reciprocal is a special power; it's a number raised to the -1 power. It's also what you get by swapping the numerator and denominator. There is a special key for reciprocals. It's the x-1 key. So let's find the reciprocal of 5. We press 5 x-1 = , and we get an answer of 0.2. There is also a special key for taking a square root. TI-30Xa automatically if no key is pressed for about 5 minutes, but does not clear display, settings, pending operations, or memory. Note: | after APD retrieves display, pending operations, settings, and memory. TI-30Xa Solar ¦ To turn on the TI-30Xa Solar, expose the solar panel to light and press !. Note: Always press! to clear the ...To input an exponent using the TI-30X IIS/B, TI-34 II Explorer Plus, TI-30XS MultiView, and TI-34 MultiView, use the carat [^] key. For TI-30X IIS/B, TI-34 II Explorer Plus, and TI-30XS MultiView users, the carat key is located below the [p] key. For TI-34 MultiView users, the carat key is located below the [x 2] key. For example: 3 4 = ? Dec 8, 2018 · Reset your calculator to eliminate the syntax error message Aug 3, 2021 · The TI-30Xa is a scientific calculator made by Texas Instruments. This single-line calculator contains three memory stores labeled “M1,” “M2” and “M3.”. Storing numbers in memory makes working with the same few numbers easier, letting you quickly pull a stored number back up for use. Step 3 – The TI-30Xa is really a scientific ... In the MathPrint™ mode, you can enter up to four levels of consecutive nested functions and expressions, which include fractions, square roots, exponents with ^, xÑ, and x When you calculate an entry on the Home screen, depending upon space, the answer is displayed either directly to the right of the entry or on the right side of the next line.Ans 0.000316 or 3.16 x 10-4 2. If the [H+] = 3.16 x 10-4 and you are asked to find the pH (this is calculating a -LOG). The TI-30Xa and Casio fx-250HC are the same except where indicated. Enter 3.16 ( the 3 significant digits of the [H+] ) a. on the TI press EE key b.TI models: Press [SCI/ENG]. The display shows FLO SCI ENG. Use the left arrow key to select FLO. Then press [=]. On other TI models, press [2nd] [FLO].The display switches to decimal notation. Casio models: Press [SHIFT] [MODE] [6:Fix]. You are then prompted to enter a number between 0 and 9. The number you enter fixes the number of decimal ...
TI-30Xa calculator. Whatpercent27s on me tv
Scientific Calculator. eCalc is a free and easy-to-use online scientific calculator that supports and resembles a ti-30 with many advanced features, including unit conversion, equation solving, square roots, EE functions, and even complex-number math. eCalc is offered as both a free online calculator and as a downloadable calculator. 0 0. TI-30XA Calculator Tips Calculator Memory - To use the memory function, hit the STO key to store a number in either memory 1, 2, or 3. o To store the product of , hit STO ; you will now have stored in memory 1 (M1) o To recall the value that is being stored in memory 1 (M1), use the RCL button. RCL 1 Fraction features. Conversions. Basic scientific and trigonometric functions. Edit, cut and paste entries. Solar and battery powered. One- and two-variable statistics. Ideal for general math, pre-algebra, algebra I and II, geometry, statistics and general science. Exam acceptance. The TI-30XIIS™ scientific calculator is approved for use on ...Jul 20, 2014 · TI models: Press [SCI/ENG]. The display shows FLO SCI ENG. Use the left arrow key to select FLO. Then press [=]. On other TI models, press [2nd] [FLO].The display switches to decimal notation. Casio models: Press [SHIFT] [MODE] [6:Fix]. You are then prompted to enter a number between 0 and 9. The number you enter fixes the number of decimal ... th. Birthday of the TI-30. The TI-30 was introduced June 13, 1976 together with the SR-40 and the financial calculator Business Analyst . With a SRP of $24.95 compared to the $49.95 of a fully equipped SR-40 the TI-30 was a great success. Probably the best selling calculator ever. Today, 25 years later we still use our modern, two-line TI-30X IIS. On most calculators, you enter the base, press the exponent key and enter the exponent. Here’s an example: Enter 10, press the exponent key, then press 5 and enter. (10^5=) The calculator should display the number 100,000, because that’s equal to 105. How do you use a TI 30Xa?MEMORIES: 1 DISPLAY: 12 LEDs KEYBOARD: 31 buttons SWITCHES: Top Right On/Off BATTERIES: 3-AA NiCads PHYSICAL: 5.8" x 3.2" x 1.3" WEIGHT: 8.25 ounces PRODUCTION: Introduced on August 1, 1975 COST: $49.95 INFO: o Possibly the last TI slide rule calculator that did not have trig functions. SR-20 AC only version of the SR-22 SR-20 was a slightly ...TI-84 models find square roots using a second function key. The square root function key is located above the x -squared (x 2) key. To access the square root function, press the second function key (2nd) in the upper left corner of the key pad. Then press the x 2 key and input the value to be evaluated. Press Enter to calculate the square root.Independent work by students - no prep needed by teacher. Just print a copy of the tutorial and worksheet for each student and watch them learn how to use their calculators well. This step by step Exponents and Roots Tutorial, with images of the calculator and the relevant keys, guides students to i...TI-30Xa Calculator - Fractions and Decimals Worksheet and Key. This Fractions and Decimals Worksheet (with complete Key) gives students practice to become fluent and efficient using their calculator. Students get 30 fractions to 1) enter correctly and 2) change the format. Students also get 20 fractions problems involving addition, subtraction ...Reset your calculator to eliminate the syntax error messageTI 30X IIS vs TI 30Xa. TI 30X IIS and TI 30Xa are two scientific calculators from Texas Instrument. These calculators are popular and easy to use as well as very affordable. Considering the price, you will get more than enough with either of them. Go check our article below if you want to know which is better between these best buys.TI-30XA Calculator Tips Calculator Memory - To use the memory function, hit the STO key to store a number in either memory 1, 2, or 3. o To store the product of , hit STO ; you will now have stored in memory 1 (M1) o To recall the value that is being stored in memory 1 (M1), use the RCL button. RCL 1 Texas Instruments TI-30XA Texas Instruments - Editorial Reviews (1) Add editorial review. www.reviewstream.com. Review: Texas Instruments TI-30XA Scientific Calculator. I just recently bought this calculator for a chemistry course about a year ago, and it has been incredibly easy to use. Scientific Calculator. eCalc is a free and easy-to-use online scientific calculator that supports and resembles a ti-30 with many advanced features, including unit conversion, equation solving, square roots, EE functions, and even complex-number math. eCalc is offered as both a free online calculator and as a downloadable calculator. 0 0. Apr 25, 2017 · Logarithmic Functions. Enter the log number then "LOG" to get the logarithm of the number. Enter the number and then "LN" for the natural log of a number. The TI-30Xa does not allow for logarithms with bases other than 10 or the natural number e. Enter the exponent, "2nd" and "10^x" to calculate an exponential multiple of 10. Jul 24, 2021 · Overview The TI-30Xa is Texas Instruments’ most basic scientific calculator. This calculator does all that a classic scientific calculator does and not much more. This Calculator is meant for elementary and possibly middle school science and math classes but not much more. It also may be perfect for anyone who wan’s a calculator for their…. Independent work by students - no prep needed by teacher. Just print a copy of the tutorial and worksheet for each student and watch them learn how to use their calculators well. This step by step Exponents and Roots Tutorial, with images of the calculator and the relevant keys, guides students to i...LOG) TI-30Xa and Casio fx-250HC are the same for all these operations. Enter 3.16 (3 digits meaning of key [H+] ) Press X (time key) Type 10 Press xy key (can be labeled as yx key, or xy or yx. This allows you to set the next number entered as an exponent of 10) Type 4 (this is a negative exponent of.