Thank you. I had been hesitating to make the purchase as I had wanted to get the apps for TI Voyage 200; but I decided to get the ones for TI-Nspire CAS CX instead, basically because it has more memory available. These apps you sell have the potential to become addictive so I most likely will be back for more! I think I made the right choice. So, needless to say, I am very impressed. Beauty is in the eye of the beholder. Your programs are my drug of choice. I am sure to enjoy them for the remainder of my life. They are one of the few things worth buying besides food and a good pair of boots.

## Thank you very much! All set and working…..Great Customer Support!!!!!

Thank you very much! Chemistry Made easy for NSpire all set and working…..

Great Customer Support!!!!!

## I think I’m in love with you guys

I think I’m in love with you guys!!!!!

Just bought Chemistry Made Easy…..

## Impressed with Calculus Made Easy for Ti-Nspire

Hi Mike

I was so impressed with CME that I bought AME and PME and they are both first-rate.

I’ll be buying more as they appear.

Your apps have made the Nspire a lot more useful to me than it was – in fact, I’m beginning to like it quite a lot.

Congratulations on the hard work, I suspect your nspire apps will be even more successful than the Ti89 apps.

Best wishes

## How to Round Numbers with Significant Digits Using Sig Fig Calculator

Significant Figures are used to make a value simpler by identifying the numbers that carry a meaningful representation for that number.

When you identify significant numbers, you basically narrow down a term to the numbers in it that matter.

But finding significant figures is just one way of making a value simpler. There are many other ways that you can use to do the same thing.

If you want to make the value smaller, consisting of a decimal number of various digits, then you can make use of rounding for that purpose.

It is quite easy to round significant figures. The approach works on certain principles or rules that you need to know.

In this article, we are going to share with you how rounding of significant figures works and how you can do it simply for a value or a measurement.

**Rounding Significant Figures**

When you round a number, it becomes simpler while carrying the same value and bringing almost the same level of results when used in different calculations.

Using the rounded values in mathematical calculations does make the term a little less accurate, but the effect of that is almost unnoticeable. It is only noticeable when you consider measurements at the tiniest scale.

**How to Round Significant Figures – Basic Rules**

If you are wondering how to round significant figures, then you are at the right place. In this section, we are going to share with you the standard rules and principles that are used to round significant figures.

**Rule 1 –** You need to select the number where you want the rounding to happen. If the number following that is less than 5, then you need to leave all the terms after that and write down the resulting number.

For example, let’s say we want to round the number 0.7652. We want the rounding to happen at number 5. The number following that is 2 which is less than 5 so nothing will change. The resulting number will be 0.765.

**Rule 2 – **If the number following the one that you have selected for rounding is greater than 5, you need to increment your selected number by 1 and leave the number following the rounded number.

For example, if you want to round the number 7 in the value 12.6578, then according to the second rule the number will become 12.658. This is because the number following our selected number for rounding was 8 which is greater than 5. That is why we incremented 1 to the rounded number.

**How to Round Significant Figures Using the Sig Fig Calculator**

** **

If you don’t want to go through the hassle of rounding significant figures manually, then we suggest you check out the significant figures calculator.

Sig Fig calculator is a handy tool that can help you cut down on the time that you need to round significant figures.

The calculator works on the rounding rules to bring you accurate results after rounding a significant figure.

You don’t need to go over the rules for rounding significant figures with this tool. You can simply just go on and use the calculator to round numbers that have significant digits in them.

Here is how you can use this tool to round significant figures:

- Enter the number in the sig fig calculator
- Use the scroll bar to choose the Round Value that you prefer
- Click on the Calculate button and the tool will round the significant figures automatically for you

This is all that you need to do to round numbers with significant digits. There is no manual effort needed on your part to perform the calculation.

**Sig Fig Calculator – Best Features **

### · **Free to Use **

The Sig Fig calculator is a free utility for students and teachers that they can use to save time and effort when rounding significant figures.

The tool takes the input from the user and performs the rounding automatically, without any kind of hassle. The results that you get from the calculator are accurate and it works incredibly fast.

### · **24/7 Availability**

It doesn’t matter where you are or what kind of web browser you are using, you can use the calculator 24/7 to round significant figures.

There are no restrictions for the use of this app, nor there are any kind of limitations. You can visit the calculator from your phone or PC web browser and use it for free to round significant figures.

### · **Additional Features**

Along with rounding significant figures, the sig fig calculator offers many additional features. For example, it also tells you the total number of significant figures in a value.

The calculator also provided you with the E-notation and the Scientific Notation of the input value. You can copy all these values and use them for various mathematical calculations.

This is what makes the sig fig calculator stand out from all the other options on the internet.

### · **Cloud-Based Service**

The sig fig calculator is a cloud-based service that runs in your web browser. You don’t need to install a 3^{rd} party app to use it. You can access it simply via your phone.

Since the app is optimized for mobile devices, you won’t need to rely on your PC or laptop for using this calculator.

### · **No Registration Needed**

The sig fig calculator doesn’t require you to register an account on the website. You can use it without doing any kind of registration.

Since the calculator is free, there is no need for you to register an account for usage. This is what makes this calculator stand out from similar paid services on the internet.

** **

**Final Words**

Learning the rules for significant figures is valuable, but it is not the quickest way to round them. This is because the process is quite time-consuming, and you just can’t do it right if you don’t have enough time to remember the rules.

This is why the Sig Fig calculator is so important because of how easy it makes for you to round significant figures.

We highly recommend that you check out the Sig Fig calculator to round significant figures in a value.

## Guest Posts Submission: Fees and Rules

$20 per post paid via Paypal to [email protected] within 3 days of Posting.

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-sister site: www.TI89.com

READ OUR RULES BELOW:

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Posts must be exclusive to TiNspireApps.com and 100% original. This means:

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Note: Longer posts tend to get more pageviews, time on page, and social love. However, they also burn you out a lot quicker. Remember, you could probably turn that monster post into 3 or 4 more targeted posts instead!

The best posts are clear, concise and only as long as they need to be. After all, our readers are busy. Tell them what they need to know and get out.

## Paragraphs

Try to be concise.

Always try to keep your paragraphs short.

One sentence is fine.

Two sentences is typically OK. But no more than three sentences. Please.

Short paragraphs are easier to understand and digest (particularly on mobile), help drive your point across, and encourage reading in this age of information overload and short attention spans.

## SEO Best Practices

Let’s practice what we preach, folks.

### Headline

Your headline should be interesting enough to entice people to click on it. It should be optimized for search and social media and have a character count of 70 characters maximum.

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- Captions are optional.
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## ACT with the Ti-Nspire CX

Is the Ti-Nspire CX permitted on the ACT exam?

Yes. The TiNspire CX (non CAS) is permitted on the ACT exam according the ACT calculator policy listed at http://www.act.org/content/dam/act/unsecured/documents/ACT-calculator-policy.pdf

The ACT app is available at https://www.tinspireapps.com/?a=ACTME

## TI-Nspire: How to take Screenshots

To take capture your screen using the Student Software simply press CTRL-J .

Learn how to take screenshots of your TiNspire CX or TiNspire CX CAS **handheld **here https://youtu.be/r8nx0d3qMcI :

## Tinspire: PQ Formel und Mitternachts (ABC) Formel

Mit dem TiNSpire kann man die PQ Formel und die Mitternachts (ABC) Formel schrittweise loesen. Mittels der TiNspire APP “Algebra Leicht Gemacht” (download https://www.tinspireapps.com/deutsch/?a=ALGLG )

Diese beiden Formeln erlauben es quadratische Gleichungen zu loesen wie etwa x^{2}+6x+8 = 0 . Hier ist ein Beispiel mit der APP.

Zuerst waehle die Option im Menu:

Gebe die Gleichung ein und schon sieht man die Schritte unten im Fenster.

Bis die finale Loesung unten gefunden ist.

Die Mitternachtsformel kann man auf die gleiche Weise loesen:

Eingabe der Gleichung wie unten gezeigt und die Loesung ist unten

So einfach ist Algebra 😉

## Tinspire: Friedmann and other Nonparametric Tests – Step by Step

Performing Nonparametric Statistics Test can easily be performed – step by step – using the TiNspire CX calculator. Check out tests such as Wilcoxon, Wallis-Kruskal and the signed Rank Test at https://tinspireapps.com/blog/perform-non-parametric-tests-such-wilcoxon-kruskal-or-signed-rank-on-the-ti-nspire/

Another example is the Friedmann Test, we will use the data of a wine test at https://www.real-statistics.com/anova-repeated-measures/friedman-test/

Ho: No wine preference vs Ha: some wine preference (white, red or rose) . Ranking the wine taste results as shown below we obtain a Test Statistic of 1.79 which results in a p-value of 0.408267 indicating no significant wine preference.

Here is the same Friedmann Test performed using the TiNspire’s Statistics Made Easy app at https://www.TiNspireapps.com/?a=SPME . First we enter the wine taste data as 3 rows, the ranks are shown to the right accounting for ties as well.

Next , we compute the sum of ranks and their averages.

Now, squaring the ranks and adding them yields 1749.5. The Test Statistics uses that, the number of tasters and the number wines and comes out to be 1.79167

Using the Chi Squared Distribution yields the p-value of 0.40827 which is not below 5% and we thus fail to reject our above stated Null-Hypotheses Ho :

## TiNspire : Mathematics Economics Solver

Solve Mathematical Economics Problems using the Ti-NSpire Step by Step, that includes: Math Topics in Economics, Computational Economics, Algebra, Complex Numbers, Exponential and Logarithmic Functions, Calculus, Optimization, Differential and Difference Equations, Matrices and Vectors.

Specifically, find Margin of Profit Marginal Revenue Break Even Point R=C Demand Analysis Continuous Income Stream Price Elasticity Consumer Surplus Producer Surplus Cobb-Douglas Prod. Gini Coefficient Simplex Algorithm Fiscal Multiplier Average Tax Rate Marginal Tax Rate Price Index Real GDP – Expenditure Approach Real GDP – Income Approach GDP Deflator: Nominal GDP to Real GDP Compute Labor Rate Nominal & Real Interest Rate Unemployment Rate and plenty more

## TiNspire – Number Theory Solver – Step by Step

Solve any Number Theory problems – Step by Step – using the Number Theory Made Easy app at www.TiNspireApps.com

Watch this Video to see how it can solve all number theory problems:

Solve Prime Numbers, Euclidean Algorithm, Theorems by Collatz, Bezout, Fermat, Euler, Wilson, Law Of Reciprocity, Chinese Remainder etc Perform Modular Arithmetic at all levels, Find GCD, LCM, Sigma Notation, Proof by Induction, Solve Diophantine Equations and any other equations, solve 2×2 and 3×3 system of equations, Solve Arithmetic and Geometric Sequences, Complex Numbers, Quadratic Equations, Complete the Square, Polynomials , Perform Polynomial and Synthetic Division, Rational Zero Theorem, Solve Combinatorics problems involving permutations and combinations. Game Theory , Prisoners Dilemma. All problems can be solved STEP BY STEP

Here is a listing of the app functionality:

Theorems & Conjectures |

Goldbach Conjecture |

Collatz Conjecture |

Twin Prime Conjecture |

Dirichlet’s Box Principle |

Euclid: Infinitely many primes. |

Prime Number Theorem |

Euler’s Theorem |

Fermat’s Little Theorem |

Fermat’s Last Theorem |

Wilson’s Theorem |

Chinese Remainder Theorem |

Law of Quadratic Reciprocity |

Bezout Theorem |

Primes |

Find Prime-Factorization |

List Primes between A and B |

Count Primes between A and B |

Find Prime greater/less than A |

Prime Checker |

Coprime Checker |

Euler’s Phi(n)-function |

Find GCD & LCM |

Euclidean Algorithm finds GCD |

Extended Euclidean Algorithm |

Bezout Theorem |

Perfect Numbers (Euclid-Euler Theorem) |

Mersenne Numbers |

Amicable Numbers |

Modular Arithmetic |

Compute a mod m |

Create table mod m |

Compute a+b |

Compute a^n mod m |

Find Inverse of a mod m |

Find Order of a mod m |

Primitive Root mod m |

Solve ax=b mod m |

Solve x^2=a mod m |

Solve ax^2+bx+c=0 mod m |

Legendre Symbol |

Law of Quadratic Reciprocity |

Integers |

Factor |

Expand/Distribute |

Find GCD & LCM |

List Divisors of N |

Sigma Î£-Notation |

Divisibility Rules |

Proof By Induction (Sums) |

Proof By Induction (Products) |

Diophantine Equations |

Count Integers given Range given N |

Count Integers divisble by N and/or M |

Integer Solutions to 1 Eqn. with 2 Variables |

Integer Solutions to 1 Eqn. with 3 Variables |

Try: Non-Integer Solutions to 1 Equation |

Algebra |

Solve any Equation or Inequality |

Solve 2×2 system – Step by Step |

Solve 3×3 system – Step by Step |

Simplify & Evaluate |

Powers |

Find Common Denominator |

Find Proper Fractions |

Solve Proportion (Ratio) Problems |

Absolute and Percent Change |

Logic |

Read Truth Tables |

Read Proposition Laws |

Read Conditional |

Read BiConditional |

Read Set Theory: 10 Facts |

Read Set Theory: 9 Laws |

Polynomials & Sequences |

All-in-one-Polynomial Explorer |

Find Degree |

Find Roots |

Polynomial Division & Remainder |

Synthetic Division |

Explicit Sequence & Partial Sum |

Recursive Sequence & Partial Sum |

Sequence Formula Finder |

Geometric Sequence & Series |

Arithmetic Sequence |

Quadratic Equations & Complex Numbers |

Do the Quadratic Equation |

Complete the Square |

Complete the Square to find Zeros |

Complete the Square to find Vertex |

One Complex Number : All-in-one-Explorer |

Two Complex Numbers : All-in-one-Explorer |

Combinatorics |

n1*n2*n3*.. = Multiplication Principle |

n! = Number of Rearrangements |

Compute n!*m! |

nPr = Number of ways to rearrange r given n |

nCr = Number of ways to pick r given n |

Game Theory |

Read Introduction & Applications |

Read Symmetric vs Non-Symmetric Games |

Read Cooperative vs Non-Cooperative Games |

Read Zero-Sum Games |

Read Simultaneous vs Non-Simultaneous Games |

Read Symmetric vs Non-Symmetric Games |

Read Prisoners Dilemma |

Read Strictly Determined Games |

Read Perfect vs Imperfect Information |

## TiNspire: Perform Boolean Algebra and DeMorgan Laws

To perform Boolean Algebra and DeMorgan Laws using the TiNspire’s Discrete Math Made Easy APP (download at www.TiNSpireApps.com ) simply enter true or false for A and B as follows:

and

Here is another example:

## Tinspire: How to convert decimals to fractions

Just do this: Select Convert to Fractions using the Algebra Made Easy app at www.TiNSpireApps.com :

Next , enter the given decimal number as shown below, that simple 😉

Here s another example:

Pretty neat !

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