So I am preparing to take the SATs in a few weeks and some of the problems require you to plug in an large exponent such as 3^70 and get the answer in scientific notation…. the only problem is every time I try to do this on my Ti-nspire it gives me the full 30-somthing digit number instead of scientific notation. Can I do anything about this? Is there a "convert to scientific notation" button?

btw I have the new operating system.

I am not familiar with the TI-NSpire, but is there a special key (like a 'star' key) that you can press and then press Enter? On my TI-89, this forces an approximate calculation instead of an exact calculation. If the number is large, it is returned in scientific notation format. On the other hand, you could manually convert to scientific notation. For example, 34 goes to 3.4*10^{1}, 341→3.41*10^{2}, 3411→3.411*10^{3}, et cetera.

47%? Take a look and try to imagine how cool 100% will be. This has won zContest 2011 and made news on TICalc. This compromise between Assembly and BASIC parses like BASIC and is fast like assembly. Grammer 2

Unfortunately I do not have a star key… Also I believe the "star" key in this case is just a multiplication key….but thanks for you help :)… Maybe someone else will solve my problem.

Oh, it is definitely not the multiplication key that I was referring to. It is like the [2nd] and [Alpha] modifier keys.

Is there a command called 'approx()' by any chance?

47%? Take a look and try to imagine how cool 100% will be. This has won zContest 2011 and made news on TICalc. This compromise between Assembly and BASIC parses like BASIC and is fast like assembly. Grammer 2

3^70 is returning and exact result. Instead of pressing ENTER, do CTL ENTER, this will give you the approximate result with scientific notation.

Another way to force the approximate result is to include a decimal point in your input, 3.^70 returns the approximate result.

Try this in a program (or function)

```
Define display(waarde)=
Prgm
setMode(1,16) © fixed 2, choose 17 for fixed 3, etc.
setMode(3,2) © scientific notation, may be omitted
setMode(5,2) © approximation mode, mandatory!
Disp waarde
EndPrgm
```

Then, in the calc page type:

```
display(6^47)
3.74EE36
Done
```

Without the line *setMode(5,2)* this doesn't work (the Reference Manual doesn't mention this) and outside a program one cannot use the *setmode(n,v)* command (the Reference Manual doesn't mention this either).

Probably, this is an undocumented feature (in other words, a bug). But the *display* program above works fine.

Perform all calculations on the large number as necessary, then call the *Display* program to display the sci result.

NOTE: the Reference Manual states that the *setmode(n,v)* command works within a program but looses context outside.

Therefor, a function that *returns* a value *waarde* instead of *Disp*laying it will probably not work. However, I didn't check that.

See also the Reference Manual on the education-ti page.

From the home screen:

Press 5 for Settings

Press 2 for Settings

Press 1 for General

3rd option from top is Exponential Format, choose "Scientific"

Note: This will display all answers in scientific notation.