Just arrow over to the one you'd like to invite back, then press the ENTER button. Your calculator will then beg you to choose a memory bank to recall from (A – E). Type 3 then the divide by button, then hit the magic memory recall button ( 2nd STO gets you RCL) How can we extract the number from memory? Let's say we want to do a calculation involving this stored number, such as 3 divided by 1.8 × 10 –5. Select memory A, B, C, D, or E-then press ENTER.ģ. Your TI-30XIIS has five (yes five-count them!) memories that makes this thing a sinch!Ģ. Then you have to divide those last two numbers, and that means typing them all back in again, right?
Then you do another calculation, and write it down also. You calculate one thing, then right it down on the page. Ooh, you've got a complicated math problem with lots of intermediate steps. When you divide two scientific numbers, your calculator doesn't get so easily confused.It's faster then pressing the ×, 10, ^, buttons every time.The advantages to entering numbers this way are: Type in 1.8 then press the 2nd button, then the E button, then type –5. Pay attention now, 'cos this will save you tons of time in this course! This is how we enter a number, like 1.8 × 10 –5 on this calculator. You can enter numbers in scientific notation using a secret calculator trick that your teachers have been hiding* from you all these years! We can do this be pressing 2nd, then the DRG button, and select SCI by pressing either the left or right arrow then enter.Įntering numbers the right way-using Scientific Notation Most of the time we will switch to scientific notation mode (SCI). useless mode is called floating point (FLO), and makes large and small numbers painful to read off of the display. Luckily, our calculator can switch between three different number display modes. Try entering a really small number on your calculator and you'll be overwhelmed by the number of ZEROs that your calculator displays! OK, so you're used to using your favorite graphing calculator, and now you're required to use a 10-dollar non-programmable calculator for chemistry.
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