A number is a mathematical object that can be used to count, measure, or name things. The natural numbers such as 1, 2, 3, 4, and so on are some of the examples. Number words are used to show numbers in language. Numerical symbols, which are used to represent numbers, should be distinguished from numbers. The Egyptians were the 1st  to establish a ciphered numeral system, and the Greeks were the next to map their counting numerals onto the Ionian and Doric alphabets. Roman numerals, which is widely used as combinations of letters from the Roman alphabet, were popular in Europe until the late 14th century, when the superior Hindu–Arabic numeral system expanded, and the Hindu–Arabic numeral system the most widely used system for representing numbers in present day. 

 Number names 1 to 30 in English

1. One 
2. Two
3. Three
4. Four
5. Five
6. Six
7. Seven
8. Eight
9. Nine
10. Ten
11. Eleven
12. Twelve
13. Thirteen
14. Fourteen
15. Fifteen
16. Sixteen
17. Seventeen
18. Eighteen
19. Nineteen
20. Twenty
21. Twenty-one
22. Twenty-two
23. Twenty-three
24. Twenty-four
25. Twenty-five
26. Twenty-six
27. Twenty-seven
28. Twenty-eight
29. Twenty-nine
30. Thirty 

Let us understand how to write 30 in ordinal number,

1 to 30 in Ordinal Number

• 1st first
• 2nd second
• 3rd third
• 4th fourth
• 5th fifth
• 6th sixth
• 7th seventh
• 8th eighth
• 9th ninth
• 10th tenth
• 11th eleventh
• 12th twelfth
• 13th thirteenth
• 14th fourteenth
• 15th fifteenth
• 16th sixteenth
• 17th seventeenth
• 18th eighteenth
• 19th nineteenth
• 20th twentieth
• 21st twenty-first
• 22nd twenty-second
• 23rd twenty-third
• 24th twenty-fourth
• 25th twenty fifth
• 26th twenty sixth
• 27th twenty seventh
• 28th twenty eighth
• 29th twenty ninth
• 30th thirtieth

How to write 1-30 in English?

When writing the spelling of numerals from 1 to 30, there are several standards to follow. These rules are mentioned below.

• Rule 1: Recognize place values: The positional value of digits in a number can be expressed in different ways depending on where they are positioned. Based on the location of 1, here’s how to tell the difference between the first four place values:

• 1 Indicates the first position
• The tenth place is represented by the number 10.
• The hundredth place is represented by the number 100.
• 1000 denotes the tens of thousands.

• Rule 2: We can immediately refer to the number names 1 to 30 chart to write the spellings of numbers 1-20, 30, 40, 50, 60, 70, 80, 90, 100, and 1000. For example, the number 8 has the name Eight, the number 14 has the name Fourteen, the number 30 has the name Thirty, and so on.

• Rule 3: To write number names for multiples of 100 between 100 and 1000, simply write the digit’s number name in the hundreds position followed by the word “hundred.” Seven hundred, for example, is the number’s name.

• Rule 4: We write the extended version of other 2 or 3-digit numerals when writing their names. We treat the ones and tens places as a single unit for numbers with (11-19) as their two last digits. After that, we spell out all of the addends and combine their names. For instance, 23 = 20 + 3, and 23 is expressed as Twenty-three in English.

Point To remember:

• A number is a mathematical construct that can be used to count, measure, or identify objects.