Here's a list of the chemical elements ordered by increasing atomic number. The names and element symbols are provided. Each element has a one- or two-letter symbol, which is an abbreviated form of its present or former name. The element number is its atomic number, which is the number of protons in each of its atoms. Most elements on the periodic table are metals and have the -ium suffix. Halogen names usually end with -ine.

Noble gas names usually have the -on ending. Elements having names not following this naming convention tend to be ones known and discovered long ago. Right now, the periodic table is "complete" in that there are no remaining spots in the 7 periods. However, new elements may be synthesized or discovered.

As with other elements, the atomic number will be determined by the number of protons within each atom. The element name and element symbol will need to be reviewed and approved by the IUPAC before inclusion on the periodic table. The element names and symbols may be proposed by the element discoverer, but often undergo revision before final approval. Before a name and symbol are approved, an element may be referred to by its atomic number e.

### Periodic Table

The systematic element name is a temporary name that is based on the atomic number as a root and the -ium ending as a suffix. For example, element has the temporary name unbinilium. Share Flipboard Email. Anne Marie Helmenstine, Ph. Chemistry Expert. Helmenstine holds a Ph.

She has taught science courses at the high school, college, and graduate levels. Facebook Facebook Twitter Twitter. Updated October 24, A prime number or prime is a natural number greater than 1 that has no positive divisors other than 1 and itself. By Euclid's theoremthere are an infinite number of prime numbers.

Subsets of the prime numbers may be generated with various formulas for primes. The first primes are listed below, followed by lists of notable types of prime numbers in alphabetical order, giving their respective first terms. The following table lists the first primes, with 20 columns of consecutive primes in each of the 50 rows.

There are known formulae to evaluate the prime-counting function the number of primes below a given value faster than computing the primes. Below are listed the first prime numbers of many named forms and types.

More details are in the article for the name. Primes that are the number of partitions of a set with n members. The next term has 6, digits. A circular prime number is a number that remains prime on any cyclic rotation of its digits in base Some sources only list the smallest prime in each cycle, for example, listing 13, but omitting 31 OEIS really calls this sequence circular primes, but not the above sequence :.

Primes that remain prime when read upside down or mirrored in a seven-segment display. Primes that become a different prime when their decimal digits are reversed.

### Multiplication Tables 13-20

The name "emirp" is obtained by reversing the word "prime". Of the form n! The probability of the existence of another Fermat prime is less than one in a billion. Fortunate numbers that are prime it has been conjectured they all are.

Primes that are a cototient more often than any integer below it except 1. Odd primes p that divide the class number of the p -th cyclotomic field.

They are also called full reptend primes. Primes p for base As of [update]there are 51 known Mersenne primes. The 13th, 14th, and 51st have respectively, and 24, digits. As of [update]this class of prime numbers also contains the largest known prime: Mthe 51st known Mersenne prime.

Asterisk noanswerAs of Junethese are the only known double Mersenne primes, and number theorists think these are probably the only double Mersenne primes. For other small athey are given below:. This form is prime for all positive integers n. Primes for which there is no shorter sub-sequence of the decimal digits that form a prime. There are exactly 26 minimal primes:. Primes p for which the least positive primitive root is not a primitive root of p 2. Three such primes are known; it is not known whether there are more.

It seems likely that all further permutable primes are repunitsi. These are also class 1- primes.Keep in touch and stay productive with Teams and Officeeven when you're working remotely.

You can list and organize the figures, pictures, or tables in your Word document by creating a table of figures, much like a table of contents. First add captions to your figures, and then use the Insert Table of Figures command on the References tab. Word then searches the document for your captions and automatically adds a list of figures, sorted by page number.

Before you create a table of figures, you must add captions to all the figures and tables that you want included in your table of figures. For more information, see Add, format, or delete captions in Word.

Some minimized views show only the Insert Table of Figures icon.

Maya 2018 wire deformerYou can adjust your Format and Options in the Table of Figures dialog box. Click OK. If you add, delete, change, or move captions, use Update Table so the table of figures reflects your changes. Click on the table of figures in your document. This will highlight the entire table. You can also press F9 to update your table of figures. Select an Update in the in the Update Table of Figures dialog box. Add, format, or delete captions. Create a table of contents.

Insert a table. Learn more. Expand your Office skills. Get new features first. Was this information helpful? Yes No.

**Easy Math - 13 times table trick - [ Method 2 ] - VISHNU HARIDASS**

Any other feedback? How can we improve? Send No thanks. Thank you for your feedback! It sounds like it might be helpful to connect you to one of our Office support agents. Contact Support.You may have to scroll up to see the table of contents.

Things change. To update the TOC, click once to select it. Then Click the Update Table button on the References tab.

## List of prime numbers

Use the Update Table of Contents dialog box to choose what to update. Click OK.

Word bases the TOC on text formatted with the Heading styles in your document. As long as you use Heading 1 for main heads, Heading 2 for subheads, and Heading 3 and so on for lower-level heads and titles, the TOC is spot-on. Or you can use your own heading styles, if you format them with a specific outline level. Since then, his list of bestsellers continues to grow. There are more than 12 million copies of his books in print, translated into 32 languages.

Villette roma nordDan welcomes visitors at his website, www. How to Create a Table of Contents in Word Related Book Word For Dummies. Create a separate page for the TOC and click the mouse to place the insertion pointer on the new, blank page.

The TOC is inserted at that point. Click the References tab and click the Table of Contents button. The Table of Contents menu appears.

## How to Create a Table of Contents in Word 2013

Choose an item from the menu based on what you want the table of contents to look like.Maths Trick — Learning your 13, 14, 15, 16,17,18,19,20 times table. Are you looking to challenge the most able in your class or want to develop mathematical confidence of your learners?

This is a great Maths trick to easily remember your times tables from 13 to You might have come across the hints and tips to remember your standard times tables and found this very effective but I find when I show learners this method to learning your 13 to 20 times tables, it just simply blows them away! It is very important to note that learners should not write anything down when using this method to learn their 13 to 20 times table.

Try to get them to this in their heads to help develop mental Maths skills. Go through the example below with them and then get them to practice loads of questions from the 13 to 20 times table in their heads.

This makes an amazing lesson starter and I remember the first time I showed a learner the ability to remember their 13 times table, it was truly heart warming. I could see it, in their eyes the happiness that it gave them. This is how easy and effective this process is and you can apply it to any numbers between 10 and 20!

You can also download this truly amazing times tables race challenge worksheet. Print it off and give it to learners as a starter or get it laminated and reuse on a regular basis. The times table worksheet allows learners to practice their 13 to 20 times tables skills. Check out the times tables below, the second one is the best!

This is not at all helpful. You cannot learn the times tables by simply using tricks. We whould be able to learn it in a fun and easy way.

My teacher does not use this method, yet she taught me my tables to twelve quite fluently! It is my holidays and I was hoping to learn the tables to 15 beforehand, so it would be easy. But this was not at all helpful.Times Table Tricks and Strategies. Times Table Worksheets. Our times table creator provides a fun and engaging way for students to learn their times tables. Customize Times Table Generator.

One click Times Table Answer Generator. Interactive Times Table Quiz Generator. One Hundred Chart. Each printable math times table is designed with the funny colourful theme. Click the below button to Download. Click Here. Multiplication is a mathematical operation to calculate repeated additions of two numbers.

Students can generate 1 to 12 Multiplication TimeTables chart and worksheet for learning and practice basic math timetables. This page is full of Multiplication time tables worksheets from 1 to times table that are suitable for all students.

Oracare dental guelphClick on below Icons to see other math times table individually. Multiplication times table to quickly perform multiplication and solve your math problems. This site to learn math times tables, multiplication 13 times tables,multiplication 14 times tables,multiplication 15 times tables,multiplication 16 times tables,multiplication 17 times tables,multiplication 18 times tables,multiplication 19 times tables,multiplication 20 times tables.

Students will learn their times tables quick and easy from mymathtables. Related Math Calculators Online math number calculation, formulasOnline Algebra calculation, formulasMatrix calculation, formulasDigital calculationStatistical calculation.

Best Times Tables Generator Here Our times table creator provides a fun and engaging way for students to learn their times tables. Download Colourful Math Times Table Each printable math times table is designed with the funny colourful theme. Click Here What is Multiplication? Multiplication 13 to 20 Times Chart Multiplication times table to quickly perform multiplication and solve your math problems.To accommodate a reference world which sometimes needs a Table of Figures, Word has a feature which helps you create your very own Table of Figures in just five easy steps!

Remember, a Table of Figures is not necessary in a short document, but in very long reports with dozens or hundreds of figures, it can help readers greatly by providing quick access to the numbered figures. Open a Word document with several figures included in the document. Type Table of Figures, and apply the Heading 1 style to the paragraph from the Home tab, in the Styles group. The Table of Figures appears in the document which shows readers a list of all the figures included throughout the document as well as a brief description of the figure.

This table also includes where each figure is located in the document. She is also an online instructor who develops and teaches courses on Microsoft Office applications, computer purchase and upgrade, home office setup and emerging hardware technologies. Her courses have educated overstudents for clients including Hewlett-Packard and Sony.

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